[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][=O].[O][C][C][N][C][C][N][C][C][Ring1][=Branch1]>>[C][N][C][C][N][Branch1][Ring2][C][C][O][C][C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[C].[C][O].[H][H].[Pd]"}]