[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][C][C][=C][C][C][=C][NH1][C][=Ring1][Branch1][C][=C][Ring1][=Branch2][N+1][=Branch1][C][=O][O-1]>>[C][C][C][=C][C][C][=C][NH1][C][=Ring1][Branch1][C][=C][Ring1][=Branch2][N]"}, {"from": "gpt", "value": "[Ni]"}]