[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][C][Branch1][C][C][Branch1][C][C][N].[C][S][=Branch1][C][=O][=Branch1][C][=O][Cl]>>[C][C][Branch1][C][C][Branch1][C][C][N][S][Branch1][C][C][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "[Cl].[Cl][C][Branch1][C][Cl][Cl]"}]