17 alpha-hydroxy-19-norpregn-5(10)-en-20-yn-3- one mixt. with (17 alpha)-3-methoxy-19-norpregna- 1,3,5(10)-trien-20-yn-17-ol
17 alpha-hydroxy-19-norpregn-5(10)-en-20-yn-3- one mixt. with (17 alpha)-3-methoxy-19-norpregna- 1,3,5(10)-trien-20-yn-17-ol