[{"from": "human", "value": "Please give me some details about this molecule. [C][C@H1][Branch2][Branch1][Ring2][C@H1][Branch2][Ring2][#C][C@H1][Branch2][Ring2][Branch1][O][C@][Ring1][=Branch1][Branch1][Ring1][C][O][O][C@@H1][C][C@@][Branch1][#C][O][C@@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][C@@H1][Branch1][Ring1][C][O][O][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C@@H1][Branch1][Ring1][C][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a disaccharide comprising 3-deoxy-alpha-D-manno-oct-2-ulopyranose (Kdo) having a 3-deoxy-alpha-D-manno-oct-2-ulopyranosyl (Kdo-CH2OH) residue attached at the 4-position. It has a role as an antigen."}]