2-Methoxy-3-nitro-5-(perfluorophenyl)pyridine
5-Chloro-3-nitro-2-(perfluorophenyl)pyridine
2-Methoxy-3-nitro-5-(2,3,6-trichlorophenyl)pyridine
2-Chloro-5-nitro-3-(perfluorophenyl)pyridine
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