Using COC(=O)c1cc(-c2ccc(OC)cc2)c(-c2ccc(F)cc2Cl)s1 to produce COC(=O)c1cc(-c2ccc(O)cc2)c(-c2ccc(F)cc2Cl)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.