a (Kdo)2-lipid IVA(6-)
a (kdo)2-lipid iva(6-)
(Kdo)<small><sub>2</sub></small>-lipid IV<small><sub>A</sub></small> deprotonated at both phosphono groups and at the uronic acid carboxy group and with unspecified (3<i>R</i>)-3-hydroxyacyl chains.