2-Cyano-3,5-difluoro-4-(trifluoromethoxy)pyridine
6-Cyano-3,4-difluoro-2-(trifluoromethoxy)pyridine
3-Cyano-2,5-difluoro-4-(trifluoromethoxy)pyridine
3-Cyano-4,5-difluoro-2-(trifluoromethoxy)pyridine
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