Using COc1c(C(=O)O)nc(-c2ccc(Cl)c(OC)c2F)c(F)c1N, BrCc1ccccc1 to produce COc1c(C(=O)OCc2ccccc2)nc(-c2ccc(Cl)c(OC)c2F)c(F)c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.