Using O=C(C(=O)N1CCC(Oc2ccc(Cl)cc2)CC1)c1c[nH]c2ccccc12 to produce Clc1ccc(OC2CCN(CCc3c[nH]c4ccccc34)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.