Kdo(a2-4)[Lyx(a2-6)Glc(b1-4)Lyx(a2-6)Glc(a1-6)Glc(a1-6)Glc(b1-4)Glc(a1-5)]Gro(a2-6)GlcN(b1-6)GlcN(a1-