α-D-Neup5Ac-(2→3)-β-D-Galp-(1→3)[β-D-Galp-(1→?)-?-D-GlcpNAc-(1→?)[β-D-Galp-(1→?)-?-D-GlcpNAc-(1→?)]-β-D-Galp-(1→?)-β-D-GlcpNAc-(1→6)]-?-D-GalpNAc-(1→
