Glc(b1-6)Glc(a1-4)GlcA(b1-3)Gal(b1-6)Glc(a1-3)Rha(a1-3)Gal(a1-2)[Glc(b1-6)Glc(a1-4)GlcA(b1-3)]Gal(b1-6)Glc(a1-3)Rha(a1-3)Gal(?1-