3-Nitro-2-(trifluoromethoxy)pyridine-6-carboxamide
3-Nitro-2-(trifluoromethoxy)pyridine-4-carboxamide
2-Nitro-6-(trifluoromethoxy)pyridine-4-carboxamide
6-Nitro-3-(trifluoromethoxy)pyridine-2-carboxamide
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