alpha-D-Glcp-(1->2)-beta-D-Glcp-(1->4)-beta-D-Glcp-(1->4)-beta-D-Glcp-(1->3)[alpha-D-GalpN-(1->4)]-alpha-D-GlcpA2NAc-(1->4)[beta-D-GlcpN-(1->7)]-?-3-deoxy-Oct-onic(?->