beta-L-Galp-(1->3)-beta-D-GlcpNAc-(1->2)-beta-L-Galp-(1->3)-beta-D-GlcpNAc-(1->2)-beta-L-Galp-(1->3)-beta-D-GlcpNAc-(1->2)-beta-L-Galp-(1->3)-?-D-GlcpNAc(1->