Using COc1ccc2c(Cl)ccnc2c1, O=C1CCC(c2ccccc2)CN1CCO to produce COc1ccc2c(OCCN3CC(c4ccccc4)CCC3=O)ccnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.