[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][Branch1][C][C][C]>>[C][N][Branch1][C][C][S][=Branch1][C][=O][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][O]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[C][O].[Cl][C][Cl]"}]