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