Ethyl 2-cyano-6-nitro-3-(trifluoromethoxy)pyridine-5-acetate
2-Cyano-6-nitro-5-(trifluoromethoxy)pyridine-3-acetic acid
Ethyl 6-cyano-3-nitro-2-(trifluoromethoxy)pyridine-4-acetate
6-Cyano-3-nitro-2-(trifluoromethoxy)pyridine-4-acetic acid
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