C=C(C)[C@@H](CC)CC[C@@H](C)[C@H]1CCC2C3C(CC[C@@]21C)[C@@]1(C)CC[C@H](O)CC1=C[C@H]3OO (3S,7S,10R,13R,17R)-17-[(2R,5S)-5-ethyl-6-methylhept-6-en-2-yl]-7-hydroperoxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol