Using CNCCN(C)C, O=C(O)Cc1ccc(NC(=O)OCc2ccccc2)cc1 to produce CN(C)CCN(C)C(=O)Cc1ccc(NC(=O)OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.