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