(8R,9S,10R,13S,14S,17R)-17-ethynyl-13-methyl-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate;19-Nor-17?-pregna-3,5-dien-20-yn-17-ol Acetate;17?-Ethinyl-17?-acetoxy-3,5-estradiene
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