[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][=C][C][C][C][C][Br].[C][C][=C][N][Branch1][C][C][C][=Branch1][C][=O][NH1][C][Ring1][Branch2][=O]>>[C][=C][C][C][C][C][N][C][=Branch1][C][=O][C][Branch1][C][C][=C][N][Branch1][C][C][C][Ring1][=Branch2][=O]"}, {"from": "gpt", "value": "[C][S][Branch1][C][C][=O].[O].[H-1].[Na+1]"}]