Ethyl 3-chloro-2-nitro-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-chloro-2-nitro-4-(trifluoromethoxy)pyridine-5-acetate
Ethyl 6-chloro-2-nitro-3-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-chloro-6-nitro-5-(trifluoromethoxy)pyridine-3-acetate
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