beta-D-GlcpNAc6S-(1->3)-beta-L-Galp6S-(1->4)-beta-D-GlcpNAc6S-(1->3)-beta-L-Galp6S-(1->4)-beta-D-GlcpNAc6S-(1->3)-beta-L-Galp6S-(1->4)-beta-D-GlcpNAc6S-(1->3)-L-Gal(?->