Using CC(C)(O)C1CCNCC1, O=Cc1cc2nc(Cl)nc(N3CCOCC3)c2o1 to produce CC(C)(O)C1CCN(Cc2cc3nc(Cl)nc(N4CCOCC4)c3o2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.