Using COCCCc1cc(CCCOC)cc(C(=O)NC2CC2)c1, FC(F)(Br)C(F)(F)Br to produce COCCCc1cc(CCCOC)c(Br)c(C(=O)NC2CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.