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