3-Cyano-4-fluoro-2-(trifluoromethoxy)pyridine-6-sulfonamide
5-Cyano-3-hydroxy-2-nitro-4-(trifluoromethoxy)pyridine
3-Cyano-5-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine
3-Cyano-2-fluoro-6-(trifluoromethoxy)pyridine-4-sulfonamide
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