3-(Difluoromethyl)-4-fluoro-2-nitro-5-(trifluoromethoxy)pyridine
3-Fluoro-5-iodo-4-nitro-2-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-2-fluoro-4-nitro-5-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-2-fluoro-4-iodo-5-(trifluoromethoxy)pyridine
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