[?-?-Hep?-(1->7)-alpha-?-Hep?-(1->7)-[?-?-Hep?-(1->7)-alpha-?-Hep?-(1->7)-[beta-D-GlcpNAc-(1->?)-[beta-D-Glcp-(1->?)-?-D-Glcp-(1->?)]-beta-L-Galp-(1->?)-?-D-Glcp-(1->3)]-alpha-?-Hep?4P-(1->3)]-alpha-?-Hep?4P-(1->?)]-D-gro-L-3-deoxy-galNon2ulo-onic(?->