[{"from": "human", "value": "What reagents could have been utilized in the following chemical reaction? [C][C][O].[N][C][C][C][C][C][C][=Branch1][C][=O][O]>>[C][C][O][C][=Branch1][C][=O][C][C][C][C][C][N]"}, {"from": "gpt", "value": "[C][C][=C][C][=C][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]