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process for the production of the new 19 nor pregna - 1,3,5 (10) - in - 3.10 - diols and its new 10 - di - down - alkanoyl - 3 - down - alkyl - and 3 - down - alkyl - 20 - down - alkanoyl derivatives
process for the production of the new 19 nor pregna - 1,3,5 (10) - in - 3.10 - diols and its new 10 - di - down - alkanoyl - 3 - down - alkyl - and 3 - down - alkyl - 20 - down - alkanoyl derivatives
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机译：新的19 nor pregna-1,3,5（10）-内-3.10-二醇及其新的10-di-down-烷酰基-3-down-烷基-和3-down-烷基-20的生产方法-降-烷酰基衍生物
