2-Bromo-3-(chloromethyl)-5-(difluoromethyl)-6-nitropyridine
2-Bromo-3-(chloromethyl)-4-(difluoromethyl)-6-nitropyridine
3-Bromo-6-(bromomethyl)-2-(difluoromethyl)-4-nitropyridine
3-Bromo-6-(bromomethyl)-4-(difluoromethyl)-2-nitropyridine
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