an alpha-Kdo-(2->4)-alpha-Kdo-(2->6)-lipid A(6-)
an alpha-kdo-(2->4)-alpha-kdo-(2->6)-lipid a(6-)
A lipid A oxoanion obtained via deprotonation of the carboxy and phosphate OH groups of an α-Kdo-(2→4)-α-Kdo-(2→6)-lipid A with unspecified (3R)-3-hydroxyacyl chains.