[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [O][=C][C][C][C][Branch1][N][C][=C][C][=C][Branch1][C][Cl][N][=C][Ring1][#Branch1][C][Ring1][N]>>[O][C][C][C][C][Branch1][N][C][=C][C][=C][Branch1][C][Cl][N][=C][Ring1][#Branch1][C][Ring1][N]"}, {"from": "gpt", "value": "[C][O].[Cl][C][Cl].[O].[BH4-1].[Na+1]"}]