11-beta-Methyl-17-alpha-ethinylestradiol 11-beta-Methyl-19-nor-17-alpha-pregna-1,3,5(10)-trien-20-yne-3,17-diol 13655-95-3 19-Nor-17-alpha-pregna-1,3,5(10)-trien-20-yne-3,17-diol, 11-beta-methyl-