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