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