Using CC(=O)OC(C)=O, O=C(NC(=O)N1C(=O)Cc2ccccc21)c1ccccc1 to produce CC(=O)C1C(=O)N(C(=O)NC(=O)c2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.