[4)GalA(a1-2)[Gal(?1-4)]Rha(a1-4)GalA(a1-2)[GalA(a1-4)]Rha(a1-4)[4)GalA(a1-]n[Ara(?1-4)]Rha(a1-4)[4)GalA(a1-]n[Gal(?1-?)Gal(?1-4)]Rha(a1-2)Rha(a1-]n