Using NC(=O)CC(NC(=O)NCc1ccccc1)C(N)=O, O=C([O-])c1ccc2ccccc2n1 to produce NC(=O)CC(NC(=O)c1ccc2ccccc2n1)C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.