Using COc1cc2c(cc1-c1ccc(C(F)(F)F)c(F)c1)CCC(=O)N2, Fc1ccc(CBr)c(F)c1 to produce COc1cc2c(cc1-c1ccc(C(F)(F)F)c(F)c1)CCC(=O)N2Cc1ccc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.