Methyl 4,6-dihydroxy-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 2,4-dihydroxy-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 2,5-dichloro-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 2,3-dihydroxy-6-(trifluoromethoxy)pyridine-5-acetate
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