?-D-GlcpNAc6OS-(1->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-Neup5Ac-(2->?)]-?-D-GalNAc-ol
