C=C(C(=O)C[C@@H](C)[C@H]1CCC2C3CC[C@H]4[C@H](C)[C@@H](O)CC[C@]4(C)[C@H]3[C@@H](O)C[C@@]21C)C(C)C (6R)-6-[(3S,4S,5S,9S,10S,11S,13R,17R)-3,11-dihydroxy-4,10,13-trimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methyl-3-methylideneheptan-4-one