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