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?? ???? >methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate
methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate
methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate ??
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methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate C??? ??, ??, ??
methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate ?? ?? ? ???
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methyl 5-(2-cyano-1-methylvinyl)-4-methyl-2-[(trifluoroacetyl)amino]-3-thiophenecarboxylate ?? ??
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