3-Cyano-2-hydroxy-5-(trifluoromethoxy)pyridine-6-sulfonamide
3-Cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-4-acetic acid
3-Cyano-5-methyl-6-(trifluoromethoxy)pyridine-2-methanol
5-Cyano-4-hydroxy-3-(trifluoromethoxy)pyridine-2-acetic acid
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