ethyl N-(4-chlorophenyl)-2-oxoglycinate

ethyl 2-(4-chlorophenylaMino)-2-oxoacetate

N-(4-Chlorophenyl)oxamidic acid ethyl ester

2-(4-Chlorophenylamino)glyoxylic acid ethyl ester

[(4-Chlorophenyl)amino]oxoacetic acid ethyl ester