SMILES: CC(=O)N[C@@H]1[C@H]([C@H]([C@H](O[C@@H]1O[C@H]2[C@H]([C@H](OC([C@@H]2NC(=O)C)O)CO[C@@]3(C[C@@H]([C@H]([C@@H](O3)[C@@H]([C@@H](CO)O[C@@]4(C[C@@H]([C@H]([C@@H](O4)[C@@H]([C@@H](CO)O[C@@]5(C[C@@H]([C@H]([C@@H](O5)[C@@H]([C@@H](CO)O)O)O)O)C(=O)O)O)O)O)C(=O)O)O)O)O)C(=O)O)O)CO)O)O[C@H]6[C@@H]([C@H]([C@H]([C@H](O6)CO)O)O[C@@]7(C[C@@H]([C@H]([C@@H](O7)[C@@H]([C@@H](CO)O)O)O)O)C(=O)O)O
Description: The molecule is a branched oligosacharide consisting of a tetrasaccharide chain of deamino-alpha-neuraminyl (KDN), beta-D-galactosyl, N-acetyl-alpha-D-galactosaminyl and N-acetyl-D-galactosamine residues linked sequentially (2->3), (1->3) and (1->3), to the reducing-end N-acetyl-D-galactosamine residue of which is also linked (2->6) a single KDN or a (2->8)-linked chain of KDN residues, the number of KDN residues in the chain ranging between 1 and 9, with an average of 3. The diagram shows the structure with 3 KDN residues in the side-chain.