GlcA(b1-2)[GlcN(a1-7)]Gro(a1-3)[sugar(?-3)FucN(b1-6)GlcN(a1-4)[GalA(a1-6)]Glc(b1-4)]Gro(a1-5)Kdo(a2-6)GlcN(b1-6)GlcN(a1-