1-[(3R,5S,10S,13S,14S)-3-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanone
A pregnane found in the urine of pregnant women and sows. It has anesthetic, hypnotic, and sedative properties.