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