6-(Difluoromethyl)-3-nitropyridine-2-carboxamide
2-(Difluoromethyl)-5-nitropyridine-3-carboxamide
3-(Difluoromethyl)-4-nitropyridine-2-carboxamide
6-(Difluoromethyl)-2-nitropyridine-3-carboxamide
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