Using BrP(Br)Br, O=C(c1ccccc1)c1ccc2nc(C(F)(F)F)c(=O)[nH]c2c1 to produce O=C(c1ccccc1)c1ccc2nc(C(F)(F)F)c(Br)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.