?-D-GalpNAc3/4S-(1→?)-?-D-GlcpNAc-(1→?)-?-D-Manp-(1→?)[?-D-GalpNAc-(1→?)-?-D-GlcpNAc-(1→?)-?-D-Manp-(1→?)]-?-D-Manp-(1→?)-?-D-GlcpNAc-(1→?)-?-D-GlcNAc
