2-(Difluoromethoxy)-5-(perchlorophenyl)pyridine
2-(Difluoromethoxy)-3-(perchlorophenyl)pyridine
2-(Difluoromethoxy)-3-nitro-5-(perchlorophenyl)pyridine
2-(Difluoromethoxy)-4-methyl-5-(perchlorophenyl)pyridine
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