SMILES: C[C@H]1[C@H]([C@H]([C@@H]([C@@H](O1)O[C@@H]2[C@H]([C@@H](O[C@@H]([C@H]2O[C@H]3[C@@H]([C@H]([C@H]([C@H](O3)CO)O)O)O[C@H]4[C@H]([C@@H]([C@@H]([C@@H](O4)C)O)O)O)CO)O[C@H]5[C@H]([C@H](OC([C@@H]5O)O)CO)O)NC(=O)C)O)O)O
Description: The molecule is a branched amino pentasaccharide comprising two fucose, one glucosamine, and two galactose units (one at the reducing end), linked as shown. It has a role as an antigen. It is an amino pentasaccharide and a glucosamine oligosaccharide.