[(2s,3s,5s,8r,9s,10s,13s,14s)-10,13-dimethyl-17-oxo-2-piperidin-1-yl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-3-yl] Acetate