CC(=O)O[C@@H]1CC2=CC[C@@H]3[C@H]([C@H](O)C[C@]4(C(=O)O)[C@@H]([C@H](C)CC[C@H](C)C(C)C)CC[C@@H]34)[C@@]2(C)[C@@H](O)C1 (1S,3R,8S,9S,10R,11R,13S,14S,17R)-3-acetyloxy-17-[(2R,5S)-5,6-dimethylheptan-2-yl]-1,11-dihydroxy-10-methyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-13-carboxylic acid