[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][O][C][=Branch1][C][=O][C][C][C][C][C][O].[C][S][=Branch1][C][=O][=Branch1][C][=O][Cl]>>[C][C][O][C][=Branch1][C][=O][C][C][C][C][C][O][S][Branch1][C][C][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "[C][C][N][Branch1][Ring1][C][C][C][C].[Cl][C][Cl]"}]