Using Oc1ccc(Br)cc1, FC(F)(F)c1cn(-c2c(Cl)cccc2Cl)c(CBr)n1 to produce FC(F)(F)c1cn(-c2c(Cl)cccc2Cl)c(COc2ccc(Br)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.