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