[4)-alpha-L-IdopA2S3Ac-(1->4)-alpha-D-GlcpN2,6S23Ac-(1->4)-alpha-L-IdopA3Ac-(1->4)-alpha-D-GlcpNAc3Ac6S-(1->4)-alpha-D-GlcpA2,3Ac2-(1->4)-alpha-D-GlcpN2,3,6S3-(1->4)-alpha-L-IdopA2S3Ac-(1->4)-alpha-D-GlcpN2,6S23Ac-(1->4)-alpha-L-IdopA2S3Ac-(1->4)-alpha-D-GlcpN2,6S23Ac-(1->]n