[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [Br][C][C][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1].[C][C][C][N][C][C][Ring1][=Branch1]>>[C][=C][C][=C][Branch1][=N][O][C][C][C][N][C][C][C][C][C][Ring1][=Branch1][C][=C][Ring1][S]"}, {"from": "gpt", "value": "[C][C][#N].[O].[O][=C][O-1].[I-1].[K+1].[NH4+1]"}]