?-6-deoxy-?-Hex?-(1->?)-?-?-Hex?-(1->?)-?-?-Hex?NAc-(1->?)[?-6-deoxy-?-Hex?-(1->?)]-?-?-Hex?-(1->?)-?-?-Hex?NAc-(1->?)-?-?-Hex?-(1->?)-?-?-Hex?-(1->
