4-Bromo-3-(bromomethyl)-2-nitro-5-(trifluoromethoxy)pyridine
4-Bromo-2-(bromomethyl)-6-nitro-3-(trifluoromethoxy)pyridine
4-Bromo-2-(bromomethyl)-5-nitro-3-(trifluoromethoxy)pyridine
3-Bromo-2-(bromomethyl)-5-methoxy-6-(trifluoromethoxy)pyridine
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