51134-98-6 BENZOIC ACID, 3,3'-(ETHYLENEBIS(OXYETHYLENEOXYETHYLENECARBONYLIMINO))BIS(5-(BUTY Benzoic acid, 3,3'-(ethylenebis(oxyethyleneoxyethylenecarbonylimino))bis (5-(butyramidomethyl)-2,4,6-triiodo-