IUPAC:4-[(1S,3bR,5aS,7S,9aS,9bS,11aR)-7-hydroxy-9a,11a-dimethyl-1H,2H,3bH,4H,5H,5aH,6H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-1-yl]-2,5-dihydrofuran-2-one
IUPAC:4-[(1S,3bR,5aS,7S,9aS,9bS,11aR)-7-hydroxy-9a,11a-dimethyl-1H,2H,3bH,4H,5H,5aH,6H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-1-yl]-2,5-dihydrofuran-2-one