β-D-GlcpNAc-(1→2)-α-?-Manp-(1→3)[β-D-GlcpNAc-(1→2)-α-?-Manp-(1→6)][β-?-Xylp-(1→2)]-β-?-Manp-(1→4)-β-D-GlcpNAc-(1→4)-β-D-GlcpNAc-(1→
