alpha-D-GlcpNAc-(1->4)-?-D-Galp-(1->?)-beta-D-GlcpNAc-(1->3)[?-D-Galp-(1->?)-beta-D-GlcpNAc-(1->3)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->6)]-?-D-GalNAc-ol
