[{"from": "human", "value": "Given this chemical reaction, what are some reagents that could have been used? [C][C][=Branch1][C][=O][Cl].[O][=C][C][=C][Branch1][C][O][C][=C][NH1][Ring1][#Branch1]>>[C][C][=Branch1][C][=O][O][C][C][=C][NH1][C][=Branch1][C][=O][C][=Ring1][#Branch1]"}, {"from": "gpt", "value": "[C][C][O][C][Branch1][C][C][=O]"}]