2-Chloro-5-(2,3-difluorophenyl)-3-nitropyridine
2,6-Bis(2,3-difluorophenyl)-4-nitropyridine
2,4-Bis(2,3-difluorophenyl)-3-nitropyridine
2-Nitro-5-(perfluorophenyl)pyridine
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