IUPAC:methyl (4R)-4-[(1R,3aS,3bR,5aS,9aS,9bS,11aR)-9a,11a-dimethyl-4,7-dioxo-hexadecahydro-1H-cyclopenta[a]phenanthren-1-yl]pentanoate
IUPAC:methyl (4R)-4-[(1R,3aS,3bR,5aS,9aS,9bS,11aR)-9a,11a-dimethyl-4,7-dioxo-hexadecahydro-1H-cyclopenta[a]phenanthren-1-yl]pentanoate