beta-D-GlcpNAc-(1->2)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->3)-beta-D-Galp-(1->3/6)[beta-D-Galp-(1->4)-beta-D-Galp-(1->3/6)]-beta-D-Galp-(1->3)-D-GalNAc(?->