[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][S][=Branch1][C][=O][=Branch1][C][=O][Cl].[O][C][C@H1][C][C][C][O][Ring1][Branch1]>>[C][S][=Branch1][C][=O][=Branch1][C][=O][O][C][C@H1][C][C][C][O][Ring1][Branch1]"}, {"from": "gpt", "value": "[Cl][C][Cl]"}]