1,1'-(1,4-Phenylenedicarbonyl)bis-2-pyrrolidinone 10481-86-4 2-Pyrrolidinone, 1,1'-(1,4-phenylenedicarbonyl)bis- 2-Pyrrolidinone, 1,1'-terephthaloyldi- (7CI,8CI) Benzoyl-1,4-dipyrrolidinone N,N'-Terephthaloylbis(pyrrolidone) N,N'-Terephthaloyldipyrrolidone p-Benzoyl-1,4-dipyrrolidinone