[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a one-carbon compound that is methane in which one of the hydrogens is replaced by a chloro group. It has a role as a refrigerant, a mutagen and a marine metabolite. It is a member of methyl halides and a member of chloromethanes."}, {"from": "gpt", "value": "[C][Cl]"}]