4-(Chloromethyl)-2-cyano-5-nitro-3-(trifluoromethoxy)pyridine
2-(Chloromethyl)-6-cyano-5-nitro-3-(trifluoromethoxy)pyridine
5-(Chloromethyl)-3-cyano-2-nitro-4-(trifluoromethoxy)pyridine
2-(Chloromethyl)-4-cyano-3-nitro-6-(trifluoromethoxy)pyridine
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