1,1'-(1,4-Butanediyl)bis(3-(4-(1-methylethoxy)phenyl)-2,5-pyrrolidinedione) 115906-26-8 2,5-Pyrrolidinedione, 1,1'-(1,4-butanediyl)bis(3-(4-(1-methylethoxy)phenyl)- BRN 5676328