?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-Neup5Ac-(2->?)-?-D-Galp-(1->?)]-alpha-D-GalpNAc-(1->
