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