4-Cyano-5-iodo-2-(trifluoromethoxy)pyridine-3-acetonitrile
3-Cyano-2-fluoro-4-(trifluoromethoxy)pyridine-6-acetonitrile
4-Cyano-3-iodo-5-(trifluoromethoxy)pyridine-2-acetonitrile
4-Fluoro-6-iodo-2-(trifluoromethoxy)pyridine-3-acetonitrile
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