Using O=C(C(=O)N1CCC(Oc2cccc(Cl)c2)CC1)c1c[nH]c2ccccc12 to produce Clc1cccc(OC2CCN(CCc3c[nH]c4ccccc34)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.