[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][N][Branch1][C][C][S][=Branch1][C][=O][=Branch1][C][=O][C][C][C][Cl].[C][N][C]>>[C][N][Branch1][C][C][C][C][C][S][=Branch1][C][=O][=Branch1][C][=O][N][Branch1][C][C][C]"}, {"from": "gpt", "value": "[C][C][#N].[O].[O][=C][Branch1][C][O-1][O-1].[I-1].[K+1].[K+1].[K+1]"}]