Methyl 3-cyano-2-nitro-6-(trifluoromethoxy)pyridine-4-acetate
Methyl 3-cyano-2-nitro-4-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-cyano-3-nitro-4-(trifluoromethoxy)pyridine-6-acetate
4-Cyano-3-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
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