GlcNAc(b1-2)[Gal(b1-4)GlcNAc(b1-4)]Man(a1-?)[GlcNAc(b1-2)[GlcNAc(b1-4)]Man(a1-?)][GlcNAc(b1-4)]Man(b1-4)GlcNAc(b1-4)GlcNAc(b1-