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