[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [C][C][O][C][C][O][C][=C][C][Branch1][#Branch1][C][=Branch1][C][=O][O][C][=C][C][=C][Ring1][#Branch2][I]>>[C][C][O][C][C][O][C][=C][C][Branch1][Ring1][C][O][=C][C][=C][Ring1][Branch2][I]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[Cl].[BH4-1].[Li+1]"}]