[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][O][C][C][C][Branch1][#Branch1][C][=Branch1][C][=O][O][C][C][C][C][C][Ring1][=Branch2]>>[C][O][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][C][C][C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[C][C][C][C][C][C].[C][C][O][C][C].[C][O].[I][I].[Na+1].[OH1-1]"}]