Ethyl 2-cyano-4-(trifluoromethyl)pyridine-6-acetate
Ethyl 3-cyano-2-(trifluoromethyl)pyridine-4-acetate
Ethyl 2-cyano-4-(trifluoromethyl)pyridine-3-acetate
Ethyl 2-cyano-6-(trifluoromethyl)pyridine-3-acetate
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