4,5-Dihydroxy-2-(trifluoromethoxy)pyridine-3-carboxamide
3,4-Difluoro-2-(trifluoromethoxy)pyridine-5-carboxamide
2,6-Dihydroxy-4-(trifluoromethoxy)pyridine-3-carboxamide
2,4-Difluoro-3-(trifluoromethoxy)pyridine-5-carboxamide
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