# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry # This journal is © The Royal Society of Chemistry 2012 data_global _journal_name_full Org.Biomol.Chem. _journal_coden_cambridge 0177 _journal_year ? _journal_volume ? _journal_page_first ? _publ_contact_author_email skyshine@zju.edu.cn _publ_contact_author_name 'Shugao Zhu' loop_ _publ_author_name 'Luling Wu' 'Shugao Zhu' 'Xian Huang' data_110414_zsg_110331b_2 _database_code_depnum_ccdc_archive 'CCDC 821990' #TrackingRef '110414_zsg_110331b_2.cif' _audit_creation_method SHELXL-97 _chemical_name_systematic ; ? ; _chemical_name_common ? _chemical_melting_point ? _chemical_formula_moiety ? _chemical_formula_sum 'C30 H24 O5' _chemical_formula_weight 464.49 loop_ _atom_type_symbol _atom_type_description _atom_type_scat_dispersion_real _atom_type_scat_dispersion_imag _atom_type_scat_source C C 0.0033 0.0016 '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' O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4' _symmetry_cell_setting monoclinic _symmetry_space_group_name_H-M 'P 21/c' _symmetry_space_group_name_Hall '-P 2ybc' loop_ _symmetry_equiv_pos_as_xyz 'x, y, z' '-x, y+1/2, -z+1/2' '-x, -y, -z' 'x, -y-1/2, z-1/2' _cell_length_a 8.3183(2) _cell_length_b 25.3594(6) _cell_length_c 10.8216(2) _cell_angle_alpha 90.00 _cell_angle_beta 90.076(2) _cell_angle_gamma 90.00 _cell_volume 2282.78(9) _cell_formula_units_Z 4 _cell_measurement_temperature 293(2) _cell_measurement_reflns_used ? _cell_measurement_theta_min ? _cell_measurement_theta_max ? _exptl_crystal_description colorless _exptl_crystal_size_max 0.32 _exptl_crystal_size_mid 0.28 _exptl_crystal_size_min 0.23 _exptl_crystal_density_meas ? _exptl_crystal_density_diffrn 1.349 _exptl_crystal_density_method 'not measured' _exptl_crystal_F_000 972 _exptl_absorpt_coefficient_mu 0.091 _exptl_absorpt_correction_type multi-scan _exptl_absorpt_correction_T_min 0.9713 _exptl_absorpt_correction_T_max 0.9793 _exptl_absorpt_process_details ; CrysAlis PRO (Oxford Diffraction, 2010) ; _exptl_special_details ; ? ; _diffrn_ambient_temperature 293(2) _diffrn_radiation_wavelength 0.71073 _diffrn_radiation_type MoK\a _diffrn_radiation_source 'fine-focus sealed tube' _diffrn_radiation_monochromator graphite _diffrn_measurement_device_type 'Xcalibur, Atlas, Gemini ultra' _diffrn_measurement_method '\w scans' _diffrn_detector_area_resol_mean 10.3592 _diffrn_standards_number ? _diffrn_standards_interval_count ? _diffrn_standards_interval_time ? _diffrn_standards_decay_% ? _diffrn_reflns_number 21130 _diffrn_reflns_av_R_equivalents 0.0291 _diffrn_reflns_av_sigmaI/netI 0.0226 _diffrn_reflns_limit_h_min -10 _diffrn_reflns_limit_h_max 10 _diffrn_reflns_limit_k_min -30 _diffrn_reflns_limit_k_max 30 _diffrn_reflns_limit_l_min -13 _diffrn_reflns_limit_l_max 12 _diffrn_reflns_theta_min 2.93 _diffrn_reflns_theta_max 25.35 _reflns_number_total 4165 _reflns_number_gt 3338 _reflns_threshold_expression >2sigma(I) _computing_cell_refinement 'CrysAlis PRO (Oxford Diffraction, 2010)' _computing_data_collection 'CrysAlis PRO' _computing_data_reduction 'CrysAlis PRO' _computing_molecular_graphics 'OLEX2 (Dolomanov et al., 2009)' _computing_publication_material OLEX2 _computing_structure_solution 'SHELXS-97 (Sheldrick, 2008)' _computing_structure_refinement 'SHELXL-97 (Sheldrick, 2008)' _refine_special_details ; Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > 2sigma(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. ; _refine_ls_structure_factor_coef Fsqd _refine_ls_matrix_type full _refine_ls_weighting_scheme calc _refine_ls_weighting_details 'calc w=1/[\s^2^(Fo^2^)+(0.0581P)^2^+1.2058P] where P=(Fo^2^+2Fc^2^)/3' _atom_sites_solution_primary direct _atom_sites_solution_secondary difmap _atom_sites_solution_hydrogens geom _refine_ls_hydrogen_treatment constr _refine_ls_extinction_method none _refine_ls_extinction_coef ? _refine_ls_number_reflns 4165 _refine_ls_number_parameters 319 _refine_ls_number_restraints 0 _refine_ls_R_factor_all 0.0555 _refine_ls_R_factor_gt 0.0407 _refine_ls_wR_factor_ref 0.1083 _refine_ls_wR_factor_gt 0.0976 _refine_ls_goodness_of_fit_ref 0.878 _refine_ls_restrained_S_all 0.878 _refine_ls_shift/su_max 0.054 _refine_ls_shift/su_mean 0.001 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_symmetry_multiplicity _atom_site_calc_flag _atom_site_refinement_flags _atom_site_disorder_assembly _atom_site_disorder_group O1 O 0.24606(16) 0.89276(5) -0.01048(12) 0.0508(4) Uani 1 1 d . . . O2 O 0.62041(18) 0.51392(6) 0.29598(13) 0.0628(4) Uani 1 1 d . . . O3 O 0.77932(16) 0.56451(5) 0.41028(11) 0.0497(3) Uani 1 1 d . . . O4 O 1.04985(16) 0.50956(6) 0.27193(17) 0.0726(5) Uani 1 1 d . . . O5 O 1.10879(14) 0.58358(5) 0.17415(12) 0.0433(3) Uani 1 1 d . . . C1 C 0.1266(2) 0.91138(8) 0.07182(19) 0.0521(5) Uani 1 1 d . . . H1A H 0.0784 0.9427 0.0386 0.078 Uiso 1 1 calc R . . H1B H 0.1747 0.9193 0.1503 0.078 Uiso 1 1 calc R . . H1C H 0.0456 0.8848 0.0823 0.078 Uiso 1 1 calc R . . C2 C 0.3295(2) 0.84845(6) 0.02184(15) 0.0353(4) Uani 1 1 d . . . C3 C 0.4558(2) 0.83497(7) -0.05494(17) 0.0464(5) Uani 1 1 d . . . H3 H 0.4775 0.8553 -0.1245 0.056 Uiso 1 1 calc R . . C4 C 0.5493(2) 0.79171(7) -0.02887(16) 0.0450(5) Uani 1 1 d . . . H4 H 0.6339 0.7832 -0.0813 0.054 Uiso 1 1 calc R . . C5 C 0.52060(19) 0.76054(6) 0.07368(14) 0.0307(4) Uani 1 1 d . . . C6 C 0.3916(2) 0.77373(7) 0.14754(15) 0.0365(4) Uani 1 1 d . . . H6 H 0.3682 0.7528 0.2158 0.044 Uiso 1 1 calc R . . C7 C 0.2958(2) 0.81722(7) 0.12286(15) 0.0380(4) Uani 1 1 d . . . H7 H 0.2096 0.8253 0.1740 0.046 Uiso 1 1 calc R . . C8 C 0.7961(2) 0.81313(7) 0.24364(16) 0.0392(4) Uani 1 1 d . . . H8 H 0.7178 0.8266 0.1910 0.047 Uiso 1 1 calc R . . C9 C 0.8869(2) 0.84648(7) 0.31706(18) 0.0455(5) Uani 1 1 d . . . H9 H 0.8699 0.8827 0.3128 0.055 Uiso 1 1 calc R . . C10 C 1.0025(2) 0.82693(8) 0.39661(18) 0.0481(5) Uani 1 1 d . . . H10 H 1.0609 0.8500 0.4462 0.058 Uiso 1 1 calc R . . C11 C 1.0318(2) 0.77343(8) 0.40299(17) 0.0451(4) Uani 1 1 d . . . H11 H 1.1101 0.7603 0.4561 0.054 Uiso 1 1 calc R . . C12 C 0.9429(2) 0.73954(7) 0.32921(15) 0.0360(4) Uani 1 1 d . . . C13 C 0.82390(19) 0.75902(6) 0.24994(14) 0.0312(4) Uani 1 1 d . . . C14 C 0.74842(18) 0.71423(6) 0.18453(14) 0.0291(3) Uani 1 1 d . . . C15 C 0.83039(18) 0.66722(6) 0.22371(14) 0.0307(4) Uani 1 1 d . . . C16 C 0.9536(2) 0.68055(7) 0.32098(16) 0.0404(4) Uani 1 1 d . . . H16A H 0.9273 0.6642 0.3994 0.049 Uiso 1 1 calc R . . H16B H 1.0603 0.6694 0.2959 0.049 Uiso 1 1 calc R . . C17 C 0.78900(18) 0.62010(6) 0.17197(14) 0.0289(3) Uani 1 1 d . . . C18 C 0.67281(18) 0.62005(6) 0.07711(14) 0.0291(3) Uani 1 1 d . . . C19 C 0.58493(18) 0.66473(6) 0.04149(14) 0.0302(3) Uani 1 1 d . . . C20 C 0.62128(18) 0.71341(6) 0.10144(14) 0.0300(3) Uani 1 1 d . . . C21 C 0.4716(2) 0.65689(7) -0.05445(15) 0.0376(4) Uani 1 1 d . . . H21 H 0.4063 0.6847 -0.0797 0.045 Uiso 1 1 calc R . . C22 C 0.4575(2) 0.60881(7) -0.11020(17) 0.0428(4) Uani 1 1 d . . . H22 H 0.3827 0.6048 -0.1735 0.051 Uiso 1 1 calc R . . C23 C 0.5513(2) 0.56501(7) -0.07589(16) 0.0386(4) Uani 1 1 d . . . H23 H 0.5412 0.5330 -0.1171 0.046 Uiso 1 1 calc R . . C24 C 0.65735(19) 0.57066(6) 0.01930(15) 0.0323(4) Uani 1 1 d . . . C25 C 0.7799(2) 0.53403(6) 0.07524(16) 0.0362(4) Uani 1 1 d . . . H25A H 0.8700 0.5290 0.0198 0.043 Uiso 1 1 calc R . . H25B H 0.7324 0.5000 0.0937 0.043 Uiso 1 1 calc R . . C26 C 0.83433(19) 0.56249(6) 0.19623(15) 0.0319(4) Uani 1 1 d . . . C27 C 0.73207(19) 0.54305(6) 0.30495(16) 0.0350(4) Uani 1 1 d . . . C28 C 0.6911(3) 0.54962(9) 0.52033(18) 0.0586(5) Uani 1 1 d . . . H28A H 0.5796 0.5585 0.5100 0.088 Uiso 1 1 calc R . . H28B H 0.7338 0.5682 0.5904 0.088 Uiso 1 1 calc R . . H28C H 0.7014 0.5123 0.5335 0.088 Uiso 1 1 calc R . . C29 C 1.0091(2) 0.54878(6) 0.22129(16) 0.0352(4) Uani 1 1 d . . . C30 C 1.2781(2) 0.57225(9) 0.1892(2) 0.0522(5) Uani 1 1 d . . . H30A H 1.3054 0.5414 0.1423 0.078 Uiso 1 1 calc R . . H30B H 1.3010 0.5661 0.2750 0.078 Uiso 1 1 calc R . . H30C H 1.3402 0.6017 0.1604 0.078 Uiso 1 1 calc R . . loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_23 _atom_site_aniso_U_13 _atom_site_aniso_U_12 O1 0.0547(8) 0.0411(7) 0.0565(8) 0.0089(6) 0.0050(6) 0.0212(6) O2 0.0536(9) 0.0774(10) 0.0572(9) 0.0033(7) -0.0012(7) -0.0342(8) O3 0.0520(8) 0.0577(8) 0.0394(7) 0.0043(6) -0.0009(6) -0.0169(6) O4 0.0383(8) 0.0610(10) 0.1184(14) 0.0460(9) -0.0072(8) 0.0073(7) O5 0.0283(6) 0.0427(7) 0.0589(8) 0.0073(6) 0.0032(5) 0.0013(5) C1 0.0496(12) 0.0490(12) 0.0576(12) -0.0074(9) -0.0036(9) 0.0215(9) C2 0.0356(9) 0.0316(9) 0.0386(9) -0.0001(7) -0.0045(7) 0.0074(7) C3 0.0528(11) 0.0443(11) 0.0420(10) 0.0158(8) 0.0119(8) 0.0132(9) C4 0.0458(11) 0.0470(11) 0.0422(10) 0.0093(8) 0.0146(8) 0.0146(9) C5 0.0310(8) 0.0309(8) 0.0302(8) -0.0005(7) -0.0026(6) 0.0029(7) C6 0.0401(10) 0.0377(9) 0.0317(8) 0.0055(7) 0.0040(7) 0.0061(7) C7 0.0355(9) 0.0418(10) 0.0369(9) -0.0018(8) 0.0059(7) 0.0083(7) C8 0.0406(10) 0.0348(9) 0.0422(9) -0.0025(8) 0.0055(7) 0.0013(8) C9 0.0475(11) 0.0335(9) 0.0555(11) -0.0100(8) 0.0105(9) -0.0037(8) C10 0.0471(11) 0.0469(11) 0.0505(11) -0.0159(9) 0.0032(9) -0.0121(9) C11 0.0413(10) 0.0490(11) 0.0449(10) -0.0063(8) -0.0055(8) -0.0062(8) C12 0.0340(9) 0.0375(9) 0.0366(9) -0.0018(7) 0.0000(7) -0.0041(7) C13 0.0300(8) 0.0324(9) 0.0313(8) -0.0013(7) 0.0054(6) -0.0011(7) C14 0.0294(8) 0.0299(8) 0.0279(8) 0.0013(6) 0.0027(6) 0.0013(6) C15 0.0279(8) 0.0321(9) 0.0319(8) 0.0025(7) -0.0014(6) -0.0003(6) C16 0.0388(10) 0.0374(9) 0.0451(10) -0.0001(8) -0.0131(8) -0.0005(8) C17 0.0248(8) 0.0289(8) 0.0331(8) 0.0027(7) -0.0002(6) 0.0012(6) C18 0.0251(8) 0.0311(8) 0.0310(8) 0.0022(7) 0.0002(6) -0.0004(6) C19 0.0269(8) 0.0328(9) 0.0310(8) 0.0026(7) 0.0001(6) 0.0013(6) C20 0.0290(8) 0.0312(8) 0.0298(8) 0.0028(6) 0.0023(6) 0.0035(6) C21 0.0344(9) 0.0383(9) 0.0402(9) 0.0041(8) -0.0092(7) 0.0033(7) C22 0.0394(10) 0.0465(11) 0.0425(10) 0.0007(8) -0.0153(8) -0.0022(8) C23 0.0400(10) 0.0351(9) 0.0407(9) -0.0047(7) -0.0071(8) -0.0031(7) C24 0.0304(9) 0.0308(8) 0.0358(9) 0.0002(7) 0.0002(7) -0.0005(7) C25 0.0344(9) 0.0304(9) 0.0436(9) -0.0022(7) -0.0035(7) 0.0019(7) C26 0.0277(8) 0.0282(8) 0.0397(9) 0.0031(7) -0.0036(7) 0.0004(6) C27 0.0287(9) 0.0323(9) 0.0441(10) 0.0064(7) -0.0073(7) -0.0003(7) C28 0.0625(14) 0.0687(14) 0.0446(11) 0.0106(10) 0.0061(10) -0.0059(11) C29 0.0313(9) 0.0311(9) 0.0432(9) 0.0037(7) -0.0039(7) 0.0020(7) C30 0.0262(9) 0.0670(13) 0.0636(12) -0.0076(10) 0.0033(8) 0.0020(9) _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 C2 1.3663(19) . ? O1 C1 1.417(2) . ? O2 C27 1.191(2) . ? O3 C27 1.322(2) . ? O3 C28 1.450(2) . ? O4 C29 1.185(2) . ? O5 C29 1.315(2) . ? O5 C30 1.446(2) . ? C1 H1A 0.9600 . ? C1 H1B 0.9600 . ? C1 H1C 0.9600 . ? C2 C7 1.379(2) . ? C2 C3 1.383(2) . ? C3 C4 1.374(2) . ? C3 H3 0.9300 . ? C4 C5 1.384(2) . ? C4 H4 0.9300 . ? C5 C6 1.380(2) . ? C5 C20 1.490(2) . ? C6 C7 1.386(2) . ? C6 H6 0.9300 . ? C7 H7 0.9300 . ? C8 C9 1.384(3) . ? C8 C13 1.393(2) . ? C8 H8 0.9300 . ? C9 C10 1.382(3) . ? C9 H9 0.9300 . ? C10 C11 1.380(3) . ? C10 H10 0.9300 . ? C11 C12 1.386(2) . ? C11 H11 0.9300 . ? C12 C13 1.399(2) . ? C12 C16 1.501(2) . ? C13 C14 1.478(2) . ? C14 C20 1.387(2) . ? C14 C15 1.437(2) . ? C15 C17 1.364(2) . ? C15 C16 1.507(2) . ? C16 H16A 0.9700 . ? C16 H16B 0.9700 . ? C17 C18 1.409(2) . ? C17 C26 1.531(2) . ? C18 C19 1.402(2) . ? C18 C24 1.406(2) . ? C19 C21 1.416(2) . ? C19 C20 1.427(2) . ? C21 C22 1.365(2) . ? C21 H21 0.9300 . ? C22 C23 1.407(2) . ? C22 H22 0.9300 . ? C23 C24 1.363(2) . ? C23 H23 0.9300 . ? C24 C25 1.505(2) . ? C25 C26 1.562(2) . ? C25 H25A 0.9700 . ? C25 H25B 0.9700 . ? C26 C29 1.519(2) . ? C26 C27 1.534(2) . ? C28 H28A 0.9600 . ? C28 H28B 0.9600 . ? C28 H28C 0.9600 . ? C30 H30A 0.9600 . ? C30 H30B 0.9600 . ? C30 H30C 0.9600 . ? 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 C2 O1 C1 118.04(14) . . ? C27 O3 C28 116.78(15) . . ? C29 O5 C30 115.95(14) . . ? O1 C1 H1A 109.5 . . ? O1 C1 H1B 109.5 . . ? H1A C1 H1B 109.5 . . ? O1 C1 H1C 109.5 . . ? H1A C1 H1C 109.5 . . ? H1B C1 H1C 109.5 . . ? O1 C2 C7 124.85(15) . . ? O1 C2 C3 115.82(15) . . ? C7 C2 C3 119.32(15) . . ? C4 C3 C2 120.28(16) . . ? C4 C3 H3 119.9 . . ? C2 C3 H3 119.9 . . ? C3 C4 C5 121.50(16) . . ? C3 C4 H4 119.2 . . ? C5 C4 H4 119.2 . . ? C6 C5 C4 117.47(15) . . ? C6 C5 C20 121.00(14) . . ? C4 C5 C20 121.50(14) . . ? C5 C6 C7 121.90(15) . . ? C5 C6 H6 119.1 . . ? C7 C6 H6 119.1 . . ? C2 C7 C6 119.49(15) . . ? C2 C7 H7 120.3 . . ? C6 C7 H7 120.3 . . ? C9 C8 C13 118.91(17) . . ? C9 C8 H8 120.5 . . ? C13 C8 H8 120.5 . . ? C10 C9 C8 121.14(17) . . ? C10 C9 H9 119.4 . . ? C8 C9 H9 119.4 . . ? C11 C10 C9 120.43(17) . . ? C11 C10 H10 119.8 . . ? C9 C10 H10 119.8 . . ? C10 C11 C12 119.13(18) . . ? C10 C11 H11 120.4 . . ? C12 C11 H11 120.4 . . ? C11 C12 C13 120.71(16) . . ? C11 C12 C16 128.35(16) . . ? C13 C12 C16 110.93(14) . . ? C8 C13 C12 119.66(15) . . ? C8 C13 C14 131.54(15) . . ? C12 C13 C14 108.79(14) . . ? C20 C14 C15 122.66(14) . . ? C20 C14 C13 130.17(14) . . ? C15 C14 C13 107.17(13) . . ? C17 C15 C14 119.11(14) . . ? C17 C15 C16 130.89(14) . . ? C14 C15 C16 110.01(13) . . ? C12 C16 C15 102.99(13) . . ? C12 C16 H16A 111.2 . . ? C15 C16 H16A 111.2 . . ? C12 C16 H16B 111.2 . . ? C15 C16 H16B 111.2 . . ? H16A C16 H16B 109.1 . . ? C15 C17 C18 118.19(14) . . ? C15 C17 C26 134.72(14) . . ? C18 C17 C26 107.01(13) . . ? C19 C18 C24 123.38(14) . . ? C19 C18 C17 123.81(14) . . ? C24 C18 C17 112.78(14) . . ? C18 C19 C21 115.77(14) . . ? C18 C19 C20 117.65(14) . . ? C21 C19 C20 126.55(14) . . ? C14 C20 C19 117.94(14) . . ? C14 C20 C5 123.12(14) . . ? C19 C20 C5 118.93(13) . . ? C22 C21 C19 120.41(15) . . ? C22 C21 H21 119.8 . . ? C19 C21 H21 119.8 . . ? C21 C22 C23 122.75(15) . . ? C21 C22 H22 118.6 . . ? C23 C22 H22 118.6 . . ? C24 C23 C22 118.34(15) . . ? C24 C23 H23 120.8 . . ? C22 C23 H23 120.8 . . ? C23 C24 C18 119.26(15) . . ? C23 C24 C25 132.55(15) . . ? C18 C24 C25 108.02(13) . . ? C24 C25 C26 104.33(13) . . ? C24 C25 H25A 110.9 . . ? C26 C25 H25A 110.9 . . ? C24 C25 H25B 110.9 . . ? C26 C25 H25B 110.9 . . ? H25A C25 H25B 108.9 . . ? C29 C26 C17 118.97(13) . . ? C29 C26 C27 108.73(13) . . ? C17 C26 C27 107.54(13) . . ? C29 C26 C25 108.69(13) . . ? C17 C26 C25 103.06(12) . . ? C27 C26 C25 109.51(13) . . ? O2 C27 O3 123.81(17) . . ? O2 C27 C26 124.76(16) . . ? O3 C27 C26 111.37(14) . . ? O3 C28 H28A 109.5 . . ? O3 C28 H28B 109.5 . . ? H28A C28 H28B 109.5 . . ? O3 C28 H28C 109.5 . . ? H28A C28 H28C 109.5 . . ? H28B C28 H28C 109.5 . . ? O4 C29 O5 124.24(16) . . ? O4 C29 C26 123.22(16) . . ? O5 C29 C26 112.42(13) . . ? O5 C30 H30A 109.5 . . ? O5 C30 H30B 109.5 . . ? H30A C30 H30B 109.5 . . ? O5 C30 H30C 109.5 . . ? H30A C30 H30C 109.5 . . ? H30B C30 H30C 109.5 . . ? _diffrn_measured_fraction_theta_max 0.999 _diffrn_reflns_theta_full 25.35 _diffrn_measured_fraction_theta_full 0.999 _refine_diff_density_max 0.189 _refine_diff_density_min -0.188 _refine_diff_density_rms 0.038