alpha-D-Ribf-(1->4)-alpha-D-GlcpA-(1->4)-beta-D-Glcp-(1->6)-beta-D-Glcp-(1->6)[4)-beta-D-Glcp-(1->4)-beta-D-Glcp-(1->4)-beta-D-Glcp-(1->3)-beta-D-Galp-(1->]n