GalA(a1-3)Glc(b1-4)[Fuc(a1-2)Gal(b1-3)[Fuc(a1-4)]GlcNAc(a1-4)GlcA(b1-4)GalA(a1-3)Glc(b1-6)]Glc(a1-5)Kdo(a2-