[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@H1][C@H1][Branch2][O][N][C@H1][Branch2][O][#Branch1][C@@H1][Branch2][O][C][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][=Branch2][S][C@@H1][Branch2][=Branch2][O][O][C@@H1][Branch2][=Branch2][Ring2][C@H1][Ring1][=Branch1][O][C@H1][C@@H1][Branch2][Branch2][Branch1][C@H1][Branch2][#Branch1][S][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][C@H1][C@H1][Branch2][Branch1][=N][C@H1][Branch2][Ring2][Ring1][C@@H1][Branch2][Ring1][=C][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][C@@H1][C@H1][Branch1][P][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][O][O][C@@H1][C@H1][Branch1][P][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][O][C@H1][C@@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C][O][Ring1][=Branch1][O][O][O][O][N][C][=Branch1][C][=O][C][C][O][O][N][C][=Branch1][C][=O][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched amino heptasaccharide consisting of a linear chain of an alpha-D-mannose residue, a beta-D-mannose residue and two N-acetyl-beta-D-glucosamine residues linked sequentially (1->6), (1->4) and (1->4), to the alpha-D-mannose residue of which are linked (1->3) and (1->2) alpha-D-mannose and beta-D-xylose residues respectively, while the N-acetyl-beta-D-glucosamine residue at the reducing end also carries an alpha-L-fucose residue via a (1->3) linkage. It forms the heptasaccharide portion of the N-glycan phytohemaglutinin (PHA). It has a role as a carbohydrate allergen. It is an amino heptasaccharide and a glucosamine oligosaccharide."}]