[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [C][C@@H1][C][N][C][C@@H1][Branch1][C][C][O][Ring1][#Branch1].[N][#C][C][C][Br]>>[C][C@@H1][C][N][Branch1][Branch1][C][C][C][#N][C][C@@H1][Branch1][C][C][O][Ring1][O]"}, {"from": "gpt", "value": "[C][C][N][Branch1][Ring1][C][C][C][C].[C][C][O]"}]