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