4-(Difluoromethyl)-3-fluoro-2-hydroxypyridine-5-carboxamide
4-(Difluoromethyl)-2-fluoro-3-hydroxypyridine-6-carboxamide
4-(Difluoromethyl)-2-fluoro-6-hydroxypyridine-3-carboxamide
5-(Difluoromethyl)-3-fluoro-2-hydroxypyridine-4-carboxamide
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