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