?-D-GlcpNAc-(1→?)-?-D-Manp-(1→?)[?-D-GlcpNAc-(1→?)-?-D-Manp-(1→?)][?-?-Xylp-(1→?)]-?-D-Manp-(1→?)-?-D-GlcpNAc-(1→?)[?-?-Fuc?-(1→?)]-?-D-GlcpNAc-(1→
