[beta-L-GalpNAc-(1->4)-[D-gro-alpha-L-3-deoxy-galNon2ulop5NGc-onic-(2->3)-beta-L-Galp-(1->4)]-beta-L-GlcpNAc-(1->6)-beta-L-Galp-(1->3)-?-L-GalpNAc(1-]-