[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][=C][C][C][C][=C][C][=C][C][Branch1][C][Br][=C][Ring1][#Branch1].[C][N][Branch1][C][C][C][=O]>>[C][=C][C][C][C][=C][C][=C][C][Branch1][Ring1][C][=O][=C][Ring1][Branch2]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[Li][C][C][C][C]"}]