2,5-Dihydroxy-3-iodo-6-(trifluoromethoxy)pyridine
2,4-Dichloro-5-(trifluoromethoxy)pyridine-3-acetonitrile
2,4-Dihydroxy-3-iodo-6-(trifluoromethoxy)pyridine
2,3-Dichloro-6-(trifluoromethoxy)pyridine-5-acetonitrile
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