(2-beta,5-alpha,17-alpha)-2-Ethynyl-A-norpregn-20-yne-2,17-diol 2-(1-piperidineacetate) 142546-47-2 A-Norpregn-20-yne-2,17-diol, 2-ethynyl-, 2-(1-piperidineacetate), (2-beta,5-alpha,17-alpha)-