Using OC1(Cc2ccccc2)CCN(CCCOc2ccc(OCc3ccccc3)cc2)CC1 to produce Oc1ccc(OCCCN2CCC(O)(Cc3ccccc3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.