[beta-D-Glcp-(1->4)-beta-D-Glcp-(1->4)-beta-L-Galp-(1->2)-L-gro-alpha-D-manHepp-(1->2)-L-gro-alpha-D-manHepp-(1->3)-L-gro-alpha-D-manHepp-(1->?)]-L-3-deoxy-manOct2ulo-onic(?->