[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a C7-cyanine dye having symmetrically-substituted 2-indolyl units at each end. It has a role as a fluorochrome. It is functionally related to a C7-indocyanine."}, {"from": "gpt", "value": "[C][/C][=Branch2][Ring2][#Branch2][=C][\\C][=C][\\C][=N+1][Branch2][Ring1][Branch2][C][=C][Branch1][Ring2][C][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O][/C][=C][/C][=C][/C][C][=C][Branch1][=C][N][\\-Ring1][Branch1][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O][C][=C][C][=Branch1][Ring2][=C][Ring1][=N][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]