[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=C][Branch2][Branch2][C][C][=C][C][=C][Branch2][#Branch1][=Branch2][C][=Branch2][#Branch1][Ring2][=C][Branch1][Ring2][N][Ring1][Branch1][C][=C][C@H1][Branch2][=Branch1][#Branch1][C@@H1][Branch2][Branch1][N][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=Branch2][Ring1][=C][=C][C][=Branch2][Ring1][Ring2][=C][Branch1][S][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=C][Ring2][Ring1][#Branch1][N][Ring2][Ring1][=Branch1][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1][C][C][C][=Branch1][C][=O][O-1][C][C][C][=C][C].[Na+1].[Na+1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is an agent consisting of chlorin e6, derived from chlorophyll, and L-aspartic acid with photosensitizing activity.  After intratumoral activation by light emitting diodes, taporfin sodium forms an extended high energy conformational state that generates singlet oxygen, resulting in free radical-mediated cell death. (NCI04)"}]