# Electronic Supplementary Material (ESI) for New Journal of Chemistry.
# This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2017

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_15
_database_code_depnum_ccdc_archive 'CCDC 1507230'
_audit_update_record             
;
2016-09-29 deposited with the CCDC.
2017-01-16 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/6
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C25 H27 N O4'
_chemical_formula_sum            'C25 H27 N O4'
_chemical_formula_weight         405.47

loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0070 0.0030 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0130 0.0070 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0210 0.0120 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 21/c'
_space_group_name_Hall           '-P 2ybc'

_shelx_space_group_comment       
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;

loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'

_cell_length_a                   8.4800(17)
_cell_length_b                   25.563(5)
_cell_length_c                   9.970(2)
_cell_angle_alpha                90
_cell_angle_beta                 99.16(3)
_cell_angle_gamma                90
_cell_volume                     2133.7(8)
_cell_formula_units_Z            4
_cell_measurement_temperature    100(2)
_cell_measurement_reflns_used    600
_cell_measurement_theta_min      3.5
_cell_measurement_theta_max      35.0

_exptl_crystal_description       needle
_exptl_crystal_colour            yellow
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_F_000             864
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.06
_exptl_absorpt_coefficient_mu    0.177
_shelx_estimated_absorpt_T_min   0.944
_shelx_estimated_absorpt_T_max   0.988
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.940
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_process_details   'Scala (Evans, 2006)'
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      100(2)
_diffrn_radiation_wavelength     0.96990
_diffrn_radiation_type           synchrotron
_diffrn_source                   ?
_diffrn_measurement_device_type  'MAR CCD'
_diffrn_measurement_method       '/f scan'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            32673
_diffrn_reflns_av_unetI/netI     0.0445
_diffrn_reflns_av_R_equivalents  0.0646
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_theta_min         3.495
_diffrn_reflns_theta_max         38.422
_diffrn_reflns_theta_full        35.587
_diffrn_measured_fraction_theta_max 0.860
_diffrn_measured_fraction_theta_full 0.924
_diffrn_reflns_Laue_measured_fraction_max 0.860
_diffrn_reflns_Laue_measured_fraction_full 0.924
_diffrn_reflns_point_group_measured_fraction_max 0.860
_diffrn_reflns_point_group_measured_fraction_full 0.924
_reflns_number_total             4042
_reflns_number_gt                3298
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_reflns_special_details          
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;

_computing_data_collection       Automar
_computing_cell_refinement       iMosflm
_computing_data_reduction        iMosflm
_computing_structure_solution    'SHELXS-97 (Sheldrick 2015)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_molecular_graphics    'SHELXTL (Sheldrick 2015)'
_computing_publication_material  SHELXTL
_refine_special_details          ?
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.079P)²+0.4P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     difmap
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     SHELXL
_refine_ls_extinction_coef       0.017(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_number_reflns         4042
_refine_ls_number_parameters     277
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0594
_refine_ls_R_factor_gt           0.0477
_refine_ls_wR_factor_ref         0.1340
_refine_ls_wR_factor_gt          0.1247
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_restrained_S_all      1.055
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
O1 O 0.91146(14) 0.44236(4) 0.13409(11) 0.0318(3) Uani 1 1 d . . . . .
O2 O 0.70737(14) 0.50035(4) 0.10936(10) 0.0283(3) Uani 1 1 d . . . . .
O3 O 0.49189(14) 0.11827(4) 0.39362(11) 0.0312(3) Uani 1 1 d . . . . .
O4 O 0.24958(14) 0.16375(4) 0.46950(11) 0.0294(3) Uani 1 1 d . . . . .
C1 C 0.3936(2) 0.33659(5) 0.29559(14) 0.0254(4) Uani 1 1 d . . . . .
H1A H 0.2762 0.3410 0.2760 0.030 Uiso 1 1 calc R U . . .
H1B H 0.4373 0.3475 0.2136 0.030 Uiso 1 1 calc R U . . .
C2 C 0.4608(2) 0.37325(5) 0.41388(14) 0.0250(4) Uani 1 1 d . . . . .
H2A H 0.3970 0.3695 0.4883 0.030 Uiso 1 1 calc R U . . .
H2B H 0.5724 0.3634 0.4496 0.030 Uiso 1 1 calc R U . . .
N3 N 0.45553(16) 0.42802(4) 0.36735(12) 0.0266(3) Uani 1 1 d . . . . .
C4 C 0.55455(19) 0.44638(5) 0.28380(14) 0.0252(4) Uani 1 1 d . . . . .
H4 H 0.5234 0.4790 0.2423 0.030 Uiso 1 1 calc R U . . .
C5 C 0.69119(19) 0.42596(5) 0.24924(14) 0.0231(4) Uani 1 1 d . . . . .
C6 C 0.77363(19) 0.37704(5) 0.30805(14) 0.0238(4) Uani 1 1 d . . . . .
C7 C 0.73257(19) 0.33036(5) 0.25719(14) 0.0242(4) Uani 1 1 d . . . . .
C8 C 0.6894(2) 0.28223(5) 0.22012(14) 0.0254(4) Uani 1 1 d . . . . .
C8A C 0.56381(19) 0.25422(5) 0.28152(14) 0.0244(4) Uani 1 1 d . . . . .
C9 C 0.5840(2) 0.19974(5) 0.30400(14) 0.0262(4) Uani 1 1 d . . . . .
H9 H 0.6719 0.1826 0.2746 0.031 Uiso 1 1 calc R U . . .
C10 C 0.4798(2) 0.17091(5) 0.36734(14) 0.0259(4) Uani 1 1 d . . . . .
C11 C 0.3478(2) 0.19576(5) 0.40957(14) 0.0260(4) Uani 1 1 d . . . . .
C12 C 0.3249(2) 0.24902(5) 0.38494(14) 0.0254(4) Uani 1 1 d . . . . .
H12 H 0.2347 0.2657 0.4118 0.030 Uiso 1 1 calc R U . . .
C12A C 0.4309(2) 0.27897(5) 0.32151(14) 0.0251(4) Uani 1 1 d . . . . .
C13 C 0.3075(2) 0.45600(6) 0.37656(19) 0.0384(5) Uani 1 1 d . . . . .
H13A H 0.3181 0.4926 0.3497 0.058 Uiso 1 1 calc R U . . .
H13B H 0.2862 0.4546 0.4703 0.058 Uiso 1 1 calc R U . . .
H13C H 0.2190 0.4396 0.3159 0.058 Uiso 1 1 calc R U . . .
C14 C 0.7814(2) 0.45569(5) 0.16106(14) 0.0249(4) Uani 1 1 d . . . . .
C15 C 0.7933(2) 0.53042(5) 0.02108(15) 0.0304(4) Uani 1 1 d . . . . .
H15A H 0.8111 0.5088 -0.0562 0.046 Uiso 1 1 calc R U . . .
H15B H 0.8964 0.5415 0.0719 0.046 Uiso 1 1 calc R U . . .
H15C H 0.7304 0.5613 -0.0121 0.046 Uiso 1 1 calc R U . . .
C16 C 0.89801(19) 0.38279(5) 0.43135(14) 0.0232(4) Uani 1 1 d . . . . .
C17 C 0.9104(2) 0.42923(5) 0.50758(14) 0.0273(4) Uani 1 1 d . . . . .
H17 H 0.8418 0.4577 0.4778 0.033 Uiso 1 1 calc R U . . .
C18 C 1.0205(2) 0.43434(6) 0.62533(15) 0.0301(4) Uani 1 1 d . . . . .
H18 H 1.0260 0.4660 0.6756 0.036 Uiso 1 1 calc R U . . .
C19 C 1.1233(2) 0.39331(6) 0.67041(15) 0.0292(4) Uani 1 1 d . . . . .
H19 H 1.1991 0.3968 0.7510 0.035 Uiso 1 1 calc R U . . .
C20 C 1.1134(2) 0.34694(5) 0.59557(15) 0.0280(4) Uani 1 1 d . . . . .
H20 H 1.1834 0.3188 0.6251 0.034 Uiso 1 1 calc R U . . .
C21 C 1.0019(2) 0.34175(5) 0.47816(14) 0.0255(4) Uani 1 1 d . . . . .
H21 H 0.9960 0.3098 0.4288 0.031 Uiso 1 1 calc R U . . .
C22 C 0.7734(2) 0.25274(5) 0.11923(15) 0.0300(4) Uani 1 1 d . . . . .
H22A H 0.8306 0.2776 0.0697 0.045 Uiso 1 1 calc R U . . .
H22B H 0.6941 0.2338 0.0549 0.045 Uiso 1 1 calc R U . . .
H22C H 0.8494 0.2278 0.1682 0.045 Uiso 1 1 calc R U . . .
C23 C 0.6203(2) 0.09121(6) 0.34828(17) 0.0358(4) Uani 1 1 d . . . . .
H23A H 0.6120 0.0951 0.2496 0.054 Uiso 1 1 calc R U . . .
H23B H 0.6153 0.0540 0.3712 0.054 Uiso 1 1 calc R U . . .
H23C H 0.7221 0.1059 0.3928 0.054 Uiso 1 1 calc R U . . .
C24 C 0.1058(2) 0.18575(6) 0.50175(17) 0.0337(4) Uani 1 1 d . . . . .
H24A H 0.0415 0.1995 0.4189 0.051 Uiso 1 1 calc R U . . .
H24B H 0.1319 0.2142 0.5675 0.051 Uiso 1 1 calc R U . . .
H24C H 0.0452 0.1587 0.5410 0.051 Uiso 1 1 calc R U . . .


_geom_special_details            
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;

loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
O1 C14 1.2241(19) . ?
O2 C14 1.3641(17) . ?
O2 C15 1.4491(16) . ?
O3 C10 1.3718(16) . ?
O3 C23 1.423(2) . ?
O4 C11 1.3708(17) . ?
O4 C24 1.425(2) . ?
C1 C12A 1.5199(18) . ?
C1 C2 1.542(2) . ?
C1 H1A 0.9900 . ?
C1 H1B 0.9900 . ?
C2 N3 1.4734(16) . ?
C2 H2A 0.9900 . ?
C2 H2B 0.9900 . ?
N3 C4 1.3571(18) . ?
N3 C13 1.460(2) . ?
C4 C5 1.364(2) . ?
C4 H4 0.9500 . ?
C5 C14 1.4664(19) . ?
C5 C6 1.5052(19) . ?
C6 C7 1.3214(19) . ?
C6 C16 1.494(2) . ?
C7 C8 1.3195(19) . ?
C8 C8A 1.493(2) . ?
C8 C22 1.5213(19) . ?
C8A C12A 1.404(2) . ?
C8A C9 1.4166(19) . ?
C9 C10 1.379(2) . ?
C9 H9 0.9500 . ?
C10 C11 1.408(2) . ?
C11 C12 1.3919(19) . ?
C12 C12A 1.406(2) . ?
C12 H12 0.9500 . ?
C13 H13A 0.9800 . ?
C13 H13B 0.9800 . ?
C13 H13C 0.9800 . ?
C15 H15A 0.9800 . ?
C15 H15B 0.9800 . ?
C15 H15C 0.9800 . ?
C16 C21 1.402(2) . ?
C16 C17 1.4044(18) . ?
C17 C18 1.385(2) . ?
C17 H17 0.9500 . ?
C18 C19 1.392(2) . ?
C18 H18 0.9500 . ?
C19 C20 1.396(2) . ?
C19 H19 0.9500 . ?
C20 C21 1.389(2) . ?
C20 H20 0.9500 . ?
C21 H21 0.9500 . ?
C22 H22A 0.9800 . ?
C22 H22B 0.9800 . ?
C22 H22C 0.9800 . ?
C23 H23A 0.9800 . ?
C23 H23B 0.9800 . ?
C23 H23C 0.9800 . ?
C24 H24A 0.9800 . ?
C24 H24B 0.9800 . ?
C24 H24C 0.9800 . ?

loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
C14 O2 C15 115.33(12) . . ?
C10 O3 C23 116.98(12) . . ?
C11 O4 C24 117.65(11) . . ?
C12A C1 C2 114.66(13) . . ?
C12A C1 H1A 108.6 . . ?
C2 C1 H1A 108.6 . . ?
C12A C1 H1B 108.6 . . ?
C2 C1 H1B 108.6 . . ?
H1A C1 H1B 107.6 . . ?
N3 C2 C1 110.34(12) . . ?
N3 C2 H2A 109.6 . . ?
C1 C2 H2A 109.6 . . ?
N3 C2 H2B 109.6 . . ?
C1 C2 H2B 109.6 . . ?
H2A C2 H2B 108.1 . . ?
C4 N3 C13 119.42(12) . . ?
C4 N3 C2 122.09(12) . . ?
C13 N3 C2 115.40(12) . . ?
N3 C4 C5 131.01(13) . . ?
N3 C4 H4 114.5 . . ?
C5 C4 H4 114.5 . . ?
C4 C5 C14 119.90(12) . . ?
C4 C5 C6 125.44(12) . . ?
C14 C5 C6 114.19(13) . . ?
C7 C6 C16 120.86(13) . . ?
C7 C6 C5 121.54(14) . . ?
C16 C6 C5 117.52(11) . . ?
C8 C7 C6 173.66(14) . . ?
C7 C8 C8A 121.08(13) . . ?
C7 C8 C22 120.61(14) . . ?
C8A C8 C22 118.22(12) . . ?
C12A C8A C9 118.71(13) . . ?
C12A C8A C8 123.88(12) . . ?
C9 C8A C8 117.38(13) . . ?
C10 C9 C8A 121.85(14) . . ?
C10 C9 H9 119.1 . . ?
C8A C9 H9 119.1 . . ?
O3 C10 C9 125.32(13) . . ?
O3 C10 C11 115.09(13) . . ?
C9 C10 C11 119.59(13) . . ?
O4 C11 C12 125.66(14) . . ?
O4 C11 C10 115.36(12) . . ?
C12 C11 C10 118.95(13) . . ?
C11 C12 C12A 122.04(14) . . ?
C11 C12 H12 119.0 . . ?
C12A C12 H12 119.0 . . ?
C8A C12A C12 118.83(12) . . ?
C8A C12A C1 122.88(13) . . ?
C12 C12A C1 118.27(13) . . ?
N3 C13 H13A 109.5 . . ?
N3 C13 H13B 109.5 . . ?
H13A C13 H13B 109.5 . . ?
N3 C13 H13C 109.5 . . ?
H13A C13 H13C 109.5 . . ?
H13B C13 H13C 109.5 . . ?
O1 C14 O2 121.77(12) . . ?
O1 C14 C5 124.18(13) . . ?
O2 C14 C5 114.05(13) . . ?
O2 C15 H15A 109.5 . . ?
O2 C15 H15B 109.5 . . ?
H15A C15 H15B 109.5 . . ?
O2 C15 H15C 109.5 . . ?
H15A C15 H15C 109.5 . . ?
H15B C15 H15C 109.5 . . ?
C21 C16 C17 117.62(14) . . ?
C21 C16 C6 121.63(12) . . ?
C17 C16 C6 120.70(13) . . ?
C18 C17 C16 121.38(14) . . ?
C18 C17 H17 119.3 . . ?
C16 C17 H17 119.3 . . ?
C17 C18 C19 120.37(13) . . ?
C17 C18 H18 119.8 . . ?
C19 C18 H18 119.8 . . ?
C18 C19 C20 119.09(15) . . ?
C18 C19 H19 120.5 . . ?
C20 C19 H19 120.5 . . ?
C21 C20 C19 120.43(14) . . ?
C21 C20 H20 119.8 . . ?
C19 C20 H20 119.8 . . ?
C20 C21 C16 121.11(13) . . ?
C20 C21 H21 119.4 . . ?
C16 C21 H21 119.4 . . ?
C8 C22 H22A 109.5 . . ?
C8 C22 H22B 109.5 . . ?
H22A C22 H22B 109.5 . . ?
C8 C22 H22C 109.5 . . ?
H22A C22 H22C 109.5 . . ?
H22B C22 H22C 109.5 . . ?
O3 C23 H23A 109.5 . . ?
O3 C23 H23B 109.5 . . ?
H23A C23 H23B 109.5 . . ?
O3 C23 H23C 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?
O4 C24 H24A 109.5 . . ?
O4 C24 H24B 109.5 . . ?
H24A C24 H24B 109.5 . . ?
O4 C24 H24C 109.5 . . ?
H24A C24 H24C 109.5 . . ?
H24B C24 H24C 109.5 . . ?

loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
C12A C1 C2 N3 165.35(13) . . . . ?
C1 C2 N3 C4 -71.30(19) . . . . ?
C1 C2 N3 C13 88.67(16) . . . . ?
C13 N3 C4 C5 -174.42(16) . . . . ?
C2 N3 C4 C5 -15.2(3) . . . . ?
N3 C4 C5 C14 -176.60(14) . . . . ?
N3 C4 C5 C6 -4.9(3) . . . . ?
C4 C5 C6 C7 86.42(19) . . . . ?
C14 C5 C6 C7 -101.45(17) . . . . ?
C4 C5 C6 C16 -90.27(19) . . . . ?
C14 C5 C6 C16 81.86(15) . . . . ?
C7 C8 C8A C12A 34.2(2) . . . . ?
C22 C8 C8A C12A -149.19(15) . . . . ?
C7 C8 C8A C9 -143.81(15) . . . . ?
C22 C8 C8A C9 32.8(2) . . . . ?
C12A C8A C9 C10 -1.9(2) . . . . ?
C8 C8A C9 C10 176.16(14) . . . . ?
C23 O3 C10 C9 -1.8(2) . . . . ?
C23 O3 C10 C11 177.82(14) . . . . ?
C8A C9 C10 O3 -179.49(14) . . . . ?
C8A C9 C10 C11 0.9(2) . . . . ?
C24 O4 C11 C12 4.3(2) . . . . ?
C24 O4 C11 C10 -173.84(13) . . . . ?
O3 C10 C11 O4 -0.7(2) . . . . ?
C9 C10 C11 O4 178.96(13) . . . . ?
O3 C10 C11 C12 -178.97(13) . . . . ?
C9 C10 C11 C12 0.6(2) . . . . ?
O4 C11 C12 C12A -179.34(14) . . . . ?
C10 C11 C12 C12A -1.2(2) . . . . ?
C9 C8A C12A C12 1.4(2) . . . . ?
C8 C8A C12A C12 -176.61(13) . . . . ?
C9 C8A C12A C1 -176.82(14) . . . . ?
C8 C8A C12A C1 5.2(2) . . . . ?
C11 C12 C12A C8A 0.2(2) . . . . ?
C11 C12 C12A C1 178.45(14) . . . . ?
C2 C1 C12A C8A -93.68(17) . . . . ?
C2 C1 C12A C12 88.14(17) . . . . ?
C15 O2 C14 O1 0.1(2) . . . . ?
C15 O2 C14 C5 -179.63(12) . . . . ?
C4 C5 C14 O1 173.76(14) . . . . ?
C6 C5 C14 O1 1.2(2) . . . . ?
C4 C5 C14 O2 -6.6(2) . . . . ?
C6 C5 C14 O2 -179.18(12) . . . . ?
C7 C6 C16 C21 15.6(2) . . . . ?
C5 C6 C16 C21 -167.69(13) . . . . ?
C7 C6 C16 C17 -161.88(14) . . . . ?
C5 C6 C16 C17 14.83(19) . . . . ?
C21 C16 C17 C18 -0.4(2) . . . . ?
C6 C16 C17 C18 177.21(13) . . . . ?
C16 C17 C18 C19 0.6(2) . . . . ?
C17 C18 C19 C20 -0.2(2) . . . . ?
C18 C19 C20 C21 -0.4(2) . . . . ?
C19 C20 C21 C16 0.5(2) . . . . ?
C17 C16 C21 C20 -0.2(2) . . . . ?
C6 C16 C21 C20 -177.73(13) . . . . ?

_refine_diff_density_max         0.235
_refine_diff_density_min         -0.220
_refine_diff_density_rms         0.052

_shelxl_version_number           2014/6

