18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17alpha)-(+-)-, mixt. with (17beta)-3-hydroxyestra-1,3,5(10)-trien-17-yl pentanoate
18,19-dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17alpha)-(+-)-, mixt. with (17beta)-3-hydroxyestra-1,3,5(10)-trien-17-yl pentanoate