Using COc1cc(-c2ccc(Cl)c(C)c2)c(F)cc1Nc1ccc(Br)cc1CO to produce COc1cc(-c2ccc(Cl)c(C)c2)c(F)cc1Nc1ccc(Br)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.