[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=Branch1][C][=O][C@][Branch2][Ring1][=Branch1][C][C@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O][O][C][C@H1][Branch2][Ring1][=C][C@@H1][C@@H1][Branch2][Ring1][Branch2][C@@H1][Branch2][Ring1][Ring1][C][C@@][Branch1][Ring2][O][Ring1][=Branch1][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][C][=C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a disaccharide derivative consisting of two 3-deoxy-alpha-D-manno-oct-2-ulopyranonosyl units joined via an alpha-(2->8)-linkage with an O-allyl group at the anomeric centre and with the carboxy group of the residue at the non-reducing end methyl-esterified. It is a disaccharide derivative, a glycoside, a methyl ester and a dicarboxylic acid monoester. It is a conjugate acid of an alpha-Kdo1Me-(2->8)-alpha-Kdo-OAll(1-)."}]