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Certified Reference Standards...
化学名称: 3,20-Dioxopregn-4-en-17-yl acetate (as per EP)
微笑: CC([C@]([C@]12C)(CC[C@@]1([H])[C@@](CCC3=CC4=O)([H])[C@]([C@]3(CC4)C)([H])CC2)OC(C)=O)=O
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