The molecule is a steroid ester, a ketoxime and a terminal acetylenic compound. It has a role as a contraceptive drug, a progestin and a synthetic oral contraceptive.
[(3E,8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-hydroxyimino-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate