Using O=Cc1ccccc1, O=C(Nc1ccc(Cl)c(Cl)c1)C1CCN(C[C@@H]2CCCNC2)CC1 to produce O=C(Nc1ccc(Cl)c(Cl)c1)C1CCN(C[C@@H]2CCCN(Cc3ccccc3)C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.