[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as a clear yellow to dark brown liquid. Insoluble in water and denser than water. Corrosive to skin, and eyes. Vapors severely irritate respiratory tract."}, {"from": "gpt", "value": "[C][=C][S][C][=Branch1][Ring2][=C][Ring1][Branch1][C][C][=Branch1][C][=O][Cl]"}]