2-Bromo-6-cyano-3-nitro-4-(trifluoromethoxy)pyridine
6-Bromo-3-cyano-2-nitro-4-(trifluoromethoxy)pyridine
6-Bromo-2-cyano-3-methyl-4-(trifluoromethoxy)pyridine
6-Bromo-2-cyano-4-methyl-3-(trifluoromethoxy)pyridine
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