17-alpha-Ethinyl-2-methyl-8-alpha-E(sub 2) 17-alpha-Ethinyl-2-methyl-8-alpha-estra-1,3,5(10)-triene-3,17-beta-diol 17-alpha-Ethinyl-2-methyl-8-alpha-estradiol 19-Nor-8-alpha,17-alpha-pregna-1,3,5(10)-trien-20-yne-3,17-diol, 2-methyl- 2-Methyl-19-nor-8-alpha,17-alpha-pregna-1,3,5(10)-trien-20-yne-3,17-diol RC8945100