alpha-L-IdopA-(1->4)-alpha-D-GlcpNAc6S-(1->4)-beta-D-GlcpA-(1->4)-alpha-D-GlcpN3S-(1->4)-alpha-L-IdopA2S-(1->4)-alpha-D-GlcpN2,6S2-(1->4)-alpha-L-IdopA2S-(1->4)-D-Man(?->