beta-D-Galp-(1->3)[alpha-D-NeupAc-(2->3/6)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->6)]-[3)-beta-D-Galp-(1->]n[alpha-D-NeupAc-(2->3/6)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->6)]-beta-D-Galp-(1->4)-D-Glc(?->