3-Cyano-6-nitro-4-(trifluoromethoxy)pyridine-2-carboxamide
4-Cyano-5-nitro-2-(trifluoromethoxy)pyridine-3-carboxamide
4-Cyano-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxamide
4-Cyano-3-nitro-2-(trifluoromethoxy)pyridine-6-carboxamide
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