[{"from": "human", "value": "Given the following reaction, what are some possible reagents that could have been utilized? [O][=C][C][C][C][=Branch1][C][=O][N][Ring1][=Branch1][Cl].[O][C][=C][C][=C][C][=C][C][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2]>>[O][C][=C][C][=C][C][=C][C][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2][Cl]"}, {"from": "gpt", "value": "[Cl][C][Cl].[Cl-1].[Cl-1].[Cl-1].[Cl-1].[Zr+4]"}]