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