3-Chloro-5-nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-Chloro-5-nitro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine
3-Chloro-4-nitro-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-Chloro-4-nitro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine