4-Nitro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxamide
4-Nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxamide
4-Nitro-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxamide
4-Nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxamide