IUPAC:(5S)-5-[(1S,3aR,3bR,5aR,9aR,9bR,11aR)-3a,3b,6,6,9a-pentamethyl-7-oxo-hexadecahydro-1H-cyclopenta[a]phenanthren-1-yl]-5-methyloxolan-2-one
IUPAC:(5S)-5-[(1S,3aR,3bR,5aR,9aR,9bR,11aR)-3a,3b,6,6,9a-pentamethyl-7-oxo-hexadecahydro-1H-cyclopenta[a]phenanthren-1-yl]-5-methyloxolan-2-one