17-alpha-Ethynyl-19-nor-delta(sup 4)-androstene-3,17-diacetoxy 19-Nor-17-alpha-pregn-4-en-20-yne-3,17-beta-diol, diacetate 19-Nor-17-alpha-pregn-4-en-20-yne-3,17-diol, diacetate 6785-71-3