2-(Fluoromethyl)-5-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine
6-(Fluoromethyl)-4-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine
3-Hydroxy-2-methoxy-5-nitro-6-(trifluoromethoxy)pyridine
3-Hydroxy-2-methoxy-4-nitro-5-(trifluoromethoxy)pyridine
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