GlcA(b1-2)Xyl(b1-2)Xyl(b1-2)[GlcA(b1-2)Xyl(b1-2)[Xyl(b1-2)Xyl(b1-4)[3)Man(a1-3)]Man(a1-3)[Xyl(b1-4)]Man(a1-3)]Man(a1-3)[Xyl(b1-4)]Man(a1-3)[Xyl(b1-4)]Man(a1-]n