triterpenoid Obacunone 0 454.19915 454.519 knapsack:C00003723 MAYJEFRPIKEYBL-OASIGRBWSA-N Obacunone chebi_ontology [H][C@]12CC[C@@]3(C)[C@H](c4ccoc4)OC(=O)[C@H]4O[C@]43[C@]1(C)C(=O)C[C@@]1([H])C(C)(C)OC(=O)C=C[C@]21C kegg.compound:C08775 InChI=1S/C26H30O7/c1-22(2)16-12-17(27)25(5)15(23(16,3)9-7-18(28)32-22)6-10-24(4)19(14-8-11-30-13-14)31-21(29)20-26(24,25)33-20/h7-9,11,13,15-16,19-20H,6,10,12H2,1-5H3/t15-,16+,19+,20-,23-,24+,25+,26-/m1/s1 CHEBI:7713 cas:751-03-1 C26H30O7