beta-D-Manp-(1->2)-[2)-beta-D-Manp-(1->]n-[3)-alpha-D-Manp-(1->]n[alpha-D-Manp-(1->2)-[2)-alpha-D-Manp-(1->]n[6)-alpha-D-Manp-(1->6)]-alpha-D-Manp-(1->6)-alpha-D-Manp-(1->]n