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