?-D-Neup5Ac-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-Galp3S-(1->?)-?-D-GlcpNAc-(1->?)]-?-D-Manp-(1->?)[?-D-Neup5Ac-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Manp-(1->?)]-?-D-Manp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-GlcNAc