beta-D-GlcpA-(1->4)-alpha-D-GlcpNAc-(1->4)-beta-D-GlcpA-(1->4)-alpha-D-GlcpN2S-(1->4)-beta-D-GlcpA-(1->4)-alpha-D-GlcpN2S-(1->4)-beta-D-GlcpA-(1->3)-?-D-Manp(1->