[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][C][O][C][=Branch1][C][=O][C][Br].[O][C][=C][C][=C][C][=C][Ring1][=Branch1][I]>>[C][C][O][C][=Branch1][C][=O][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][I]"}, {"from": "gpt", "value": "[C][C][#N].[O][=C][Branch1][C][O-1][O-1].[K+1].[K+1]"}]