(2R,3aS,3bS)-2,6-diethynyl-6-hydroxy-3a,5a-dimethylhexadecahydrodicyclopenta[a,f]naphthalen-2-yl morpholin-4-ylacetate
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A-Norpregn-20-yne-2,17-diol,2-ethynyl-, 2-(4-morpholineacetate); Dicyclopenta[a,f]naphthalene,A-norpregn-20-yne-2,17-diol deriv.