[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][Cl]"}, {"from": "gpt", "value": "The molecule is also known as methyl chloride. It is a clear, colorless gas. It has a faint, sweet odor that is noticeable only at levels that may be toxic. It is heavier than air, and it is extremely flammable."}]