Using CC(C)(O)C1CCNCC1, O=Cc1nc2nc(Cl)nc(N3CCOCC3)c2s1 to produce CC(C)(O)C1CCN(Cc2nc3nc(Cl)nc(N4CCOCC4)c3s2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.