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