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