Using O=Cc1ccc(O)c(C(=O)O)c1, Fc1ccc(CBr)c(F)c1 to produce O=Cc1ccc(OCc2ccc(F)cc2F)c(C(=O)OCc2ccc(F)cc2F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.