alpha-D-Manp-(1->2)-alpha-D-Manp-(1->2)-alpha-D-Manp-(1->2)-alpha-D-Manp-(1->2)[beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-beta-D-Manp-(1->2)-alpha-D-Manp-(1->?)]-alpha-D-Manp-(1->]