[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][C][Br][Branch1][C][Br][Branch1][C][Br][Br]"}, {"from": "gpt", "value": "The molecule appears as a colorless crystalline solid. Much more dense than water and insoluble in water. Toxic by ingestion. Vapors are narcotic in high concentration. Used to make other chemicals."}]