[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule appears as a colorless liquid. Flash point near 70 \u00b0F. Very toxic by inhalation. Denser than water. Used to make other chemicals."}, {"from": "gpt", "value": "[C][C][C][C][O][C][=Branch1][C][=O][Cl]"}]