trimethyl-[[(3S,5S,8R,9S,10S,13S,14S,17S)-10,13,17-trimethyl-3-trimethylsilyloxy-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-yl]oxy]silane
trimethyl-[[(3S,5S,8R,9S,10S,13S,14S,17S)-10,13,17-trimethyl-3-trimethylsilyloxy-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-17-yl]oxy]silane