[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][N][C][C][C][C@H1][Ring1][Branch1][C][=C][N][=C][C][Branch1][Branch1][C][C][C][#N][=C][Ring1][#Branch2]>>[C][N][C][C][C][C@H1][Ring1][Branch1][C][=C][N][=C][C][Branch1][Branch1][C][C][C][N][=C][Ring1][#Branch2]"}, {"from": "gpt", "value": "[C][O].[N].[H][H].[Ni]"}]