4-(Difluoromethoxy)-3-fluoro-5-(perfluorophenyl)pyridine
2-(Difluoromethoxy)-5-fluoro-3-(perfluorophenyl)pyridine
2-(Difluoromethoxy)-3-fluoro-5-(perfluorophenyl)pyridine
5-Chloro-2-(difluoromethoxy)-3-(2,4,5-trichlorophenyl)pyridine
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