124500-20-5 2(3H)-Furanone, dihydro-5-(4-chlorophenyl)-3-(1-pyrrolidinylmethyl)-, (Z)-2-butenedioate (1:1) Dihydro-5-(4-chlorophenyl)-3-(1-pyrrolidinylmethyl)-2(3H)-furanone (Z)-2-butenedioate (1:1)