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