(8R,9S,10R,13S,14S,17R)-13-Ethyl-17-ethynyl-17-hydroxy-6,7,8,9,10,11,12,13,14,17-decahydro-1H-cyclopenta[a]phenanthren-3(2H)-one; (17α)-13-Ethyl-17-hydroxy-18,19-Dinorpregna-4,15-dien-20-yn-3-one; (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14-decahydrocyclopenta[a]phenanthren-3-one