[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][=C][C@H1][C][O][C@H1][Branch1][Ring1][C][O][C][O][Ring1][Branch2].[C][I]>>[C][=C][C@H1][C][O][C@H1][Branch1][Ring2][C][O][C][C][O][Ring1][=Branch2]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[O].[H-1].[Na+1]"}]