[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [O][=C][Branch1][=Branch1][C][C][C][C][Cl][C][C][=C][C][=C][C][=C][Ring1][=Branch1]>>[O][C][Branch1][=Branch1][C][C][C][C][Cl][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "[C][C][O].[Cl].[O].[BH4-1].[Na+1]"}]