->3)-beta-D-Galp-(1->3)-beta-D-GalpNAc-(1->4)-[alpha-Neup5Ac-(2->8)-alpha-Neup5Ac-(2->8)-alpha-Neup5Ac-(2->3)]-beta-D-Galp-yl group
->3)-beta-d-galp-(1->3)-beta-d-galpnac-(1->4)-[alpha-neup5ac-(2->8)-alpha-neup5ac-(2->8)-alpha-neup5ac-(2->3)]-beta-d-galp-yl group
A divalent organic group consisting of an <em>N</em>-acetyl-α-neuraminyl-(2→8)-<em>N</em>-acetyl-α-neuraminyl-(2→8)-<em>N</em>-acetyl-α-neuraminyl-(2→3)-β-<small>D</small>-galactosyl tetrasaccharide residue, to the galactosyl residue of which is also (1→4) linked a →3)-β-<small>D</small>-galactosyl-(1→3)-<em>N</em>-acetyl-β-<small>D</small>-galactosaminyl disaccharide group.