?-D-GalpNAc-(1→?)[?-D-Neup5Ac-(2→?)]-?-D-Galp-(1→?)-?-D-GlcpNAc-(1→?)[?-D-Galp-(1→?)-?-D-GalpNAc-(1→?)]-?-D-Galp-(1→?)-?-D-Glc
