19-Nor-17-alpha-pregn-4-en-20-yne-3-beta,17-diol diacetate mixed with 3-methoxy-19-nor-17-alpha-pregna-1,3,5(10)-trien-20-yn-17-ol Ethynodiol diacetate mixed with mestranol Mestranol mixed with ethynodiol diacetate RC8964000