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