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