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