Gal(a1-3)[Gal(a1-3)Gal(b1-4)[Gal(a1-3)[Gal(a1-3)[Gal(a1-3)Gal(b1-4)[6)GlcNAc(a1-4)]ManNAc(b1-4)]GlcNAc(b1-6)]GlcNAc(a1-4)ManNAc(b1-4)]GlcNAc(b1-]n