4-Cyano-3,6-dimethoxy-2-(trifluoromethoxy)pyridine
3-Cyano-2,5-dimethoxy-6-(trifluoromethoxy)pyridine
6-Cyano-2,4-dimethoxy-3-(trifluoromethoxy)pyridine
3-Cyano-2,4-dimethoxy-5-(trifluoromethoxy)pyridine
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