[{"from": "human", "value": "Please give me some details about this molecule. [C][C][S][C][C][S][C][C][S][Ring1][=Branch2]"}, {"from": "gpt", "value": "The molecule is a crown thioether that is cyclononane in which the carbon atoms at positions 1, 4 and 7 are replaced by sulfur atoms. It is a tridentate thioether ligand that is used to synthesise complexes with a wide variety of transition metal ions. It has a role as a chelator. It is a saturated organic heteromonocyclic parent and a crown thioether."}]