[{"from": "human", "value": "Describe this molecule. [C][C@H1][C@H1][Branch2][Branch1][S][C@H1][Branch2][Branch1][O][C@@H1][Branch2][Branch1][=Branch1][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Ring2][=Branch2][C@H1][Branch2][Ring2][Ring2][C@H1][Branch2][Ring1][=C][O][C@H1][Ring1][=Branch1][O][C@@H1][C@H1][Branch1][#C][C@@H1][Branch1][O][O][C@@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][C][O][O][N][C][=Branch1][C][=O][C][C][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is an amino trisaccharide consisting of alpha-L-fucopyranose, beta-D-galactopyranose and N-acetyl-beta-D-galactopyranosamine residues joined in sequence with a (1->2)- and a (1->3)-linkage, respectively; alpha-L-Fucp-(1->2)-beta-D-Galp-(1->3)-D-GalpNAc in which the configuration at the reducing-end anomeric centre is beta. It is an amino trisaccharide, a galactosamine oligosaccharide and an alpha-L-Fucp-(1->2)-beta-D-Galp-(1->3)-D-GalpNAc."}]