[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C][=N][C][Ring1][Branch1][=C][Branch2][=Branch1][=Branch2][C][=C][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=Branch2][Ring2][P][=C][C][=C][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=Branch2][Ring1][=Branch2][=C][C][=C][C][=Branch1][S][=C][Ring2][Ring1][Branch1][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][N][Ring1][=N][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O]"}, {"from": "gpt", "value": "The molecule is a synthetic light-activated chlorin with photodynamic activity. Upon systemic administration, temoporfin distributes throughout the body and is taken up by tumor cells. Upon stimulation of temoporfin by non-thermal laser light (at 652 nm), and in the presence of oxygen, this agent produces highly reactive short-lived singlet oxygen and other reactive oxygen radicals, resulting in local damage to tumor cells. This may kill tumor cells and may reduce the tumor size."}]