[{"from": "human", "value": "From the provided chemical reaction, propose some possible reagents that could have been used. [C][I].[I][C][=N][NH1][C][=C][Ring1][Branch1][C][C][C][C][C][Ring1][#Branch1]>>[C][N][N][=C][Branch1][C][I][C][=C][Ring1][=Branch1][C][C][C][C][C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[C][C][Branch1][C][C][Branch1][C][C][O-1].[K+1]"}]