Synonyms: AC1L22PO;LS-37411;3-[(butanoylamino)methyl]-5-[3-[2-[2-[2-[3-[3-[(butanoylamino)methyl]-5-carboxy-2,4,6-triiodoanilino]-3-oxopropoxy]ethoxy]ethoxy]ethoxy]propanoylamino]-2,4,6-triiodobenzoic acid;51134-98-6;Benzoic acid, 3,3'-(ethylenebis(oxyethyleneoxyethylenecarbonylimino))bis (5-(butyramidomethyl)-2,4,6-triiodo-