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