[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][C][=Branch1][C][=O][Cl].[C][C][=C][C][Branch1][C][O][=C][C][=C][Ring1][#Branch1][Cl]>>[C][C][C][=Branch1][C][=O][C][=C][C][Branch1][C][Cl][=C][Branch1][C][C][C][=C][Ring1][Branch2][O]"}, {"from": "gpt", "value": "[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]