Using CI, O=C(c1ccc(Cl)cc1)N1CCN(C2CN(C(=O)c3ccc(Cl)cc3)CC2O)CC1 to produce COC1CN(C(=O)c2ccc(Cl)cc2)CC1N1CCN(C(=O)c2ccc(Cl)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.