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