[{"from": "human", "value": "Describe this molecule. [C][Branch1][Ring1][C][Br][Cl]"}, {"from": "gpt", "value": "The molecule is a haloalkane that is bromoethane substituted by chlorine at position 2. It has a role as a mutagen. It is a haloalkane, an organobromine compound and an organochlorine compound."}]