[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][Branch1][C][C][C][C][N].[C][C][=C][C][Branch1][Ring1][C][=O][=C][C][=C][Ring1][Branch2][Br]>>[C][C][=C][C][Branch1][#Branch2][C][N][C][C][C][Branch1][C][C][C][=C][C][=C][Ring1][=N][Br]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]