Kdo(a2-4)[GalA(b1-3)GlcNAc(b1-6)GlcN(a1-4)GalA(a1-3)[GalA(b1-7)Gro(a1-7)]Gro(a1-3)[Glc(b1-4)]Gro(a1-5)]Kdo(a2-