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