4-(Difluoromethyl)-3-nitro-5-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-(trifluoromethyl)pyridine-6-acetonitrile
6-(Difluoromethyl)-2-(trifluoromethyl)pyridine-3-acetonitrile
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