5-Bromo-3-(difluoromethyl)-4-nitropyridine-2-carboxamide
4-Bromo-2-(difluoromethyl)-5-nitropyridine-3-carboxamide
4-Bromo-2-(difluoromethyl)-3-nitropyridine-5-carboxamide
5-Bromo-4-(difluoromethyl)-2-nitropyridine-3-carboxamide
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