Neu5Ac(a2-3)Gal(b1-4)[Fuc(a1-3)]GlcNAc(?1-?)[Neu5Ac(a2-3)Gal(b1-4)GlcNAc(?1-?)]Gal(b1-3)[Neu5Ac(a2-3)Gal(b1-4)GlcNAc(b1-6)]GalNAc