[{"from": "human", "value": "What can you tell me about this molecule? [C][C@H1][C@@H1][Branch2][#Branch1][Ring2][C@H1][Branch2][=Branch1][#C][C@H1][Branch2][=Branch1][#Branch2][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@H1][Branch2][Branch1][=N][C@@H1][Branch2][Ring1][S][O][C@H1][Branch2][Ring1][#Branch2][C@@H1][Ring1][=Branch1][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][C][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][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched tetrasaccharide consisting of an alpha-L-Rha-(1->3)-alpha-L-Rha-(1->3)-beta-D-GlcNAc trisaccharide chain, to the central rhamnose residue is also linked alpha(1->4) a D-glucose residue. Derived from the Shigella liposaccharide O-antigen, it has antigenic properties. It has a role as an antigen."}]