Kdo(?2-4)Kdo(?2-4)[Glc(a1-2)Glc(a1-2)[GlcNAc(a1-3)]Gal(a1-3)Glc(a1-3)[GlcNAc(a1-7)Gro(a1-7)]Gro(a1-3)Gro(a1-5)]Kdo