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