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