SMILES: C[C@H]1[C@H]([C@H]([C@@H]([C@@H](O1)O[C@@H]2[C@H]([C@H]([C@H](O[C@H]2O[C@@H]3[C@H](OC([C@@H]([C@H]3O)NC(=O)C)O)CO)CO)O)O[C@@H]4[C@@H]([C@H]([C@H]([C@H](O4)CO)O)O)NC(=O)C)O)O)O
Description: The molecule is a branched amino tetrasaccharide comprising N-acetyl-D-glucosamine at the reducing end with a N-acetyl-alpha-D-galactosaminyl-(1->3)-[alpha-L-fucosyl-(1->2)]-beta-D-galactosyl moiety attached at the 4-position. It has a role as an antigen. It is an amino tetrasaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.