89846-13-9 AGGAG D-Glucose, O-2-(acetyl-t-amino)-2-deoxy-beta-D-glucopyranosyl-(1-4)-O-beta-D-glucopyranuronosyl-(1-3)-2-(acetyl-t-amino)-2-deoxy- N-Acetylglucosaminylglucuronic acid-N-acetylglucosamine