C=C(C)[C@@H](CC)CC[C@@H](C)[C@H]1CCC2C3C[C@@H](O)C4=CC(=O)CC[C@]4(C)C3CC[C@@]21C (6R,10R,13R,17R)-17-[(2R,5S)-5-ethyl-6-methylhept-6-en-2-yl]-6-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one