Using CC(=O)OC(C)=O, O=C(Cc1ccccc1)C1C(=O)Nc2ccccc21 to produce CC(=O)N1C(=O)C(C(=O)Cc2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.