3-Amino-4-(difluoromethyl)-6-nitropyridine-2-carboxamide
3-Amino-2-(difluoromethyl)-6-nitropyridine-5-carboxamide
6-Amino-4-(difluoromethyl)-2-nitropyridine-3-carboxamide
5-Amino-2-(difluoromethyl)-4-methylpyridine-3-carboxamide
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