[4)-beta-D-ManpA2NAc-(1->4)-[4)-alpha-D-GlcpNAc6Ac-(1->3)-alpha-D-Fucp4NAc-(1->4)-beta-D-ManpA2NAc-(1->]2-3-alpha-D-GlcpNAc6Ac-(1->3)-alpha-D-Fucp4NAc-(1->]n