2-Cyano-6-(difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine
2-Chloro-4-iodo-5-(trifluoromethoxy)pyridine-3-acetonitrile
2-Cyano-5-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
2-Chloro-3-iodo-6-(trifluoromethoxy)pyridine-5-acetonitrile
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