[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][O].[N][C][=C][C][=C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=C][Ring1][#Branch2]>>[C][O][C][=Branch1][C][=O][C][C][=C][C][=C][Branch1][C][N][C][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[O][=C][Branch1][C][O-1][O-1].[O][=S][=Branch1][C][=O][Branch1][C][O][O].[Na+1].[Na+1]"}]