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