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