preferred_name: 3-((((3-((((3-(ACETYLMETHYLAMINO)-2,4,6-TRIIODO-5-(METHYLCARBAMOYL)BENZOYL)AMINO)ACETYL)AMINO)-5-((2-HYDROXYETHYL)CARBAMOYL)-2,4,6-TRIIODOBENZOYL)AMINO)ACETYL)AMINO)-5-((2-HYDROXYETHYL)CARBAMOYL)-2,4,6-TRIIODOBENZOIC ACID