Using CCOC(=O)CCN, O=C(O)CCCN(C(=O)c1ccc(Cl)cc1)C(Cc1ccccc1)c1ccccc1 to produce O=C(O)CCNC(=O)CCCN(C(=O)c1ccc(Cl)cc1)C(Cc1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.