英文同义词: | 3,4-Seco-3,4-epoxyfriedelane-3-one;4-Hydroxy-3,4-secofriedelane-3-oic acid 3,4-lactone;A-Homo-4-oxa-D:A-friedooleanan-3-one;Friedelalactone;Friedelin 3,4-lactone;Chryseno[2,1-c]oxepin-3(2H)-one, eicosahydro-5,5a,7b,9a,12,12,13b,15a-octamethyl-, (5R,5aS,7aS,7bR,9aR,13aR,13bS,15aR,15bS)- |