3-Phenyl-2-oxo-3-pyrrolidincarbonsaeure-ethylester

2-Phenyl-4-(3,3-diphenylureido)-buttersaeureethylester

3,3-二苯基吡咯烷-2-酮

diphenyl-carbamic acid methyl ester

1-(Diphenylcarbamoyl)-3-(2-pyridyl)-2-pyrrolidon