?-D-NeupAc-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-NeupAc-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)]-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-NeupAc-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)]-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)[?-D-NeupAc-(2->?)-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)]-?-D-Galp-(1->?)-?-D-GlcpNAc-(1->?)-?-D-Galp-(1->?)-?-D-Glcp-(1->