Using COC(=O)C(=Cc1cc(C)c(OCc2ccccc2)c(Cl)c1)NC(C)=O to produce COC(=O)C(Cc1cc(C)c(O)c(Cl)c1)NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.