?-D-Neup5Ac-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Glcp-(1->?)[?-D-Neup5Ac-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Glcp-(1->?)]-?-D-Manp-(1->?)-?-D-GlcNAc
