[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][O][C][=C][C][=C][Branch1][N][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O][C][Branch1][C][Cl][=C][Ring1][=C][Cl]>>[C][O][C][=C][C][=C][Branch1][=Branch2][C][C][C][C][=Branch1][C][=O][O][C][Branch1][C][Cl][=C][Ring1][=N][Cl]"}, {"from": "gpt", "value": "[Cl].[O].[Zn]"}]