?-D-Neup5Ac-(2→?)-?-?-Hex?-(1→?)-?-?-Hex?NAc-(1→?)-?-?-Hex?-(1→?)[?-6-deoxy-?-Hex?-(1→?)]-?-?-Hex?NAc-(1→?)-?-?-Hex?-(1→?)-?-?-Hex?NAc-(1→?)-?-?-Hex?-(1→?)-?-?-Hex?-(1→
