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