17α-(1,3-Butadiynyl)-17β-hydroxyestr-5(10)-en-3-one
17α-(1,3-Butadiynyl)-17β-hydroxyestr-5(10)-en-3-one ??
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17α-(1,3-Butadiynyl)-17β-hydroxyestr-5(10)-en-3-one ?? ?? ? ???
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17α-(1,3-Butadiynyl)-17β-hydroxyestr-5(10)-en-3-one ?? ??
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