IUPAC:(1S,3aR,4S,5aR,9aS,11aR)-4-hydroxy-3a,6,6,9a,11a-pentamethyl-1-[(2S)-2-methyl-5-oxooxolan-2-yl]-1H,2H,3H,3aH,4H,5H,5aH,6H,7H,8H,9H,9aH,10H,11H,11aH-cyclopenta[a]phenanthrene-3,7,10-trione
IUPAC:(1S,3aR,4S,5aR,9aS,11aR)-4-hydroxy-3a,6,6,9a,11a-pentamethyl-1-[(2S)-2-methyl-5-oxooxolan-2-yl]-1H,2H,3H,3aH,4H,5H,5aH,6H,7H,8H,9H,9aH,10H,11H,11aH-cyclopenta[a]phenanthrene-3,7,10-trione