Using O=C1CCN(C(=O)C2(c3ccc(Cl)cc3Cl)CC2)C1, O=C(O)c1cccnc1 to produce O=C1OC2(CCN(C(=O)C3(c4ccc(Cl)cc4Cl)CC3)C2)c2ccncc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.