[4)-alpha-D-GlcpN2,6S2-(1->4)-alpha-L-Idop-(1->4)-alpha-D-GlcpNAc6S-(1->4)-alpha-D-Glcp-(1->4)-alpha-D-GlcpN2,3,6S3-(1->4)-alpha-L-Idop2S-(1->4)-alpha-D-GlcpN2,6S2-(1->4)-alpha-L-Idop2S-(1->]n