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