2-((3-Nitrophenyl)amino)-2-oxoethyl acetate Acetic acid,2-[(3-nitrophenyl)amino]-2-oxo-, ethyl ester ethyl [(3-nitrophenyl)carbamoyl]formate ethyl 2-((3-nitrophenyl)amino)-2-oxoacetate Ethyl 2-(3-nitroanilino)-2-oxoacetate ethyl[(3-nitrophenyl)carbamoyl]formate