[?-L-GalpNAc-(1->?)-[D-gro-?-L-3-deoxy-galNon2ulop5NAc-onic-(2->?)-?-L-Galp-(1->?)]-?-D-GlcpNAc-(1->?)-[?-L-GalpNAc-(1->?)-D-gro-?-L-3-deoxy-galNon2ulop5NAc-onic-(2->?)-?-L-Galp-(1->?)]-?-L-GalpNAc(1-]-