[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][S][=Branch1][C][=O][=Branch1][C][=O][Cl].[N][C][C][=C][C][=C][O][Ring1][Branch1]>>[C][S][=Branch1][C][=O][=Branch1][C][=O][N][C][C][=C][C][=C][O][Ring1][Branch1]"}, {"from": "gpt", "value": "[C][C][N][Branch1][Ring1][C][C][C][C].[C][C][O][C][Branch1][C][C][=O].[Cl][C][Cl]"}]