3-Cyano-5-hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine
3-Cyano-2-hydroxy-5-methoxy-4-(trifluoromethoxy)pyridine
3-Chloro-2-hydroxy-4-iodo-6-(trifluoromethoxy)pyridine
6-Chloro-3-hydroxy-2-iodo-4-(trifluoromethoxy)pyridine
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