C=C(CC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3[C@@H](OC(C)=O)C=C4C[C@@H](O)C[C@H](O)[C@]4(C)[C@H]3CC[C@]12C)C(C)C [(1S,3R,7R,8S,9S,10R,13R,14S,17R)-1,3-dihydroxy-10,13-dimethyl-17-[(2R)-6-methyl-5-methylideneheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-7-yl] acetate