[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][Branch1][Ring1][C][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][C][O][C][C][N][Branch1][Ring1][C][C][C][C]"}, {"from": "gpt", "value": "Withdrawn from the Canadian, US, and UK markets in 1976 due to carcinogenicity."}]