6 beta-(2'-fluoro)ethyl-19-norcholest-5(10)-en-3 beta-ol
6 beta-(2'-fluoro)ethyl-19-norcholest-5(10)-en-3 beta-ol ??
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6 beta-(2'-fluoro)ethyl-19-norcholest-5(10)-en-3 beta-ol C??? ??, ??, ??
6 beta-(2'-fluoro)ethyl-19-norcholest-5(10)-en-3 beta-ol ?? ?? ? ???
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6 beta-(2'-fluoro)ethyl-19-norcholest-5(10)-en-3 beta-ol ?? ??
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