[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [O][=N+1][Branch1][C][O-1][C][=C][C][NH1][C][=C][C][=Ring1][Branch1][C][=C][Ring1][=Branch2][Br]>>[N][C][=C][C][NH1][C][=C][C][=Ring1][Branch1][C][=C][Ring1][=Branch2][Br]"}, {"from": "gpt", "value": "[C][C][O].[Ni]"}]