[beta-L-Galp-(1->4)-beta-D-GlcpNAc-(1->2)-alpha-L-Manp-(1->3/6)-[alpha-L-Manp-(1->6)-alpha-L-Manp-(1->3)-alpha-L-Manp-(1->3/6)]-beta-D-GlcpNAc-(1->4)]-?-D-GlcpNAc(1->