[beta-L-Galp-(1->4)-beta-D-GlcpNAc-(1->6)-[beta-L-Galp-(1->4)-beta-D-GlcpNAc-(1->6)-beta-L-Galp-(1->4)-beta-D-GlcpNAc-(1->3)-beta-L-Galp-(1->3)]-alpha-L-GalpNAc(1-]-