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