(5S,7R,8R,10S,12S,13R,14S,17R)-7,12-dihydroxy-17-[(1R)-4-hydroxy-1-methyl-butyl]-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one