?-D-Neup9Ac-(2→?)-?-D-Neup5Ac-(2→?)-?-D-Galp-(1→?)-?-D-GalpNAc-(1→?)[?-D-Neup9Ac-(2→?)-?-D-Neup5Ac-(2→?)]-?-D-Galp-(1→?)-?-D-Glc
