[D-gro-?-L-3-deoxy-galNon2ulop5NAc-onic-(2->?)-?-L-Galp-(1->?)-?-L-GlcpNAc-(1->?)-D-gro-?-L-3-deoxy-galNon2ulop5NGc-onic-(2->?)-?-L-Galp-(1->?)-?-L-GalpNAc(1-]-