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