alpha-D-GlcpNAc3,4,6S3-(1->4)-beta-D-GlcpA2,3S2-(1->4)-alpha-D-GlcpNAc3,6S2-(1->4)-beta-D-GlcpA2,3S2-(1->4)-alpha-D-GlcpNAc3,6S2(1->