[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][#C][C][C][C][C][C][O].[C][I]>>[C][#C][C][C][C][C][C][O][C]"}, {"from": "gpt", "value": "[C][C][O][C][C].[C][N][Branch1][C][C][C][=O].[O].[H-1].[Na+1]"}]