isopropyl 2-deoxy-2-sulfoaminoglucopyranosyl-(1-4)-2-O-sulfoidouronosyl-(1-4)-2-deoxy-2-acetylamino-6-O-sulfoglucopyranosyl-(1-4)-idouronosyl-(1-4)-2-deoxy-2-sulfoaminoglucopyransoyl-(1-4)-2-sulfoidouronoside