[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [Br][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][C][N][C][C][Ring1][=Branch1].[C][=O]>>[C][N][C][C][N][Branch1][#Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][Br][C][C][Ring1][=N]"}, {"from": "gpt", "value": "[BH3-1][C][#N].[Na+1]"}]