31112-66-0 Compound 18 D-Glucitol, 2-((3-(acetylamino)-5-(acetylmethylamino)-2,4,6-triiodobenzoyl)amino)-2-deoxy- N-(3-Acetamido-5-N-methylacetamido-2,4,6-triiodobenzoyl)-2-amino-2-deoxy-D-glucitol