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