3,4-Dihydroxy-2-methoxy-6-(trifluoromethoxy)pyridine
2,6-Dihydroxy-3-methoxy-5-(trifluoromethoxy)pyridine
3,6-Dihydroxy-2-methoxy-4-(trifluoromethoxy)pyridine
3,4-Difluoro-2-(trifluoromethoxy)pyridine-5-methanol
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