Using O=C(Nc1ccc(OCc2ccccc2)cn1)C(CC1CCCC1)c1ccc(Cl)c(Cl)c1 to produce O=C(Nc1ccc(O)cn1)C(CC1CCCC1)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.