[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a chemical weapon related to sulfur mustard (mustard gas) and is expected to react in a similar fashion. See the chemical datasheet for sulfur mustard for more information."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][S][C][C][Cl][S][C][C][Cl]"}]