Using O=C1Nc2ccc(Cl)cc2N2CCN(C(=O)OCc3ccccc3)CC12 to produce O=C(OCc1ccccc1)N1CCN2c3cc(Cl)ccc3NCC2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.