英文名称
4-[[(1R,3aR,5aS,5bS,7aR,9S,11aR,11bS,13aS,13bS)-9-(4-hydroxy-3,3-dimethyl-4-oxo-butanoyl)oxy-1-isopropenyl-8,8,11a-trimethyl-1,2,3,4,5,5a,5b,6,7,7a,9,10,11,11b,12,13,13a,13b-octadecahydrocyclopenta[a]chrysen-3a-yl]methoxy]-2,2-dimethyl-4-oxo-butanoic acid