Kdo(a2-4)[GlcN(b1-2)Glc(b1-3)[Kdo(a2-6)Glc(a1-4)]GalN(a1-3)Gro(a1-3)Gro(a1-5)]Kdo(a2-6)GlcN(b1-6)GlcN(a1-