(3S,4S,5S,8R,9S,10S,11S,13R,14R,17R)-4,10,13-trimethyl-17-[(E,2R,5R)-4,5,6-trimethylhept-3-en-2-yl]-1,2,3,4,5,6,7,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthrene-3,8,11-triol