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