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