Methyl Gestodene

(8R,9S,10R,13S,14S,17S)-13-Ethyl-17-hydroxy-17-(prop-1-yn-1-yl)-1,2,6,7,8,9,10,11,12,13,14,17-
dodecahydro-3H-cyclopenta[a]phenanthren-3-one; Gona-4,15-dien-3-one, 13-ethyl-17-hydroxy-17-(1-propynyl)-, (17β); (17β)-13-Ethyl-17-hydroxy-17-(1-propynyl)-gona-4,15-dien-3-one;