2-acetamido-2-deoxy-D-gluco-hexopyranosyl-(1->2)-alpha-D-manno-hexopyranosyl-(1->3)-[2-acetamido-2-deoxy-D-gluco-hexopyranosyl-(1->2)-alpha-D-manno-hexopyranosyl-(1->6)]-beta-D-manno-hexopyranosyl-(1->4)-2-acetamido-2-deoxy-beta-D-gluco-hexopyranosyl-(1->4)-2-acetamido-2-deoxy-beta-D-gluco-hexopyranose