alpha-D-NeupAc-(2->3)-beta-D-Galp-(1->3)[alpha-D-NeupAc-(2->3)-beta-D-Galp6S-(1->4)-beta-D-GlcpNAc6S-(1->3)-[3)-beta-D-Galp6S-(1->4)[alpha-L-Fucp-(1->3)]-beta-D-GlcpNAc6S-(1->]n-beta-D-Galp6S-(1->4)-beta-D-GlcpNAc6S-(1->6)]-beta-D-GalpNAc(1->