Using O=P(Br)(Br)Br, CCSc1ccccc1-c1nc2cc(C(F)(F)F)ccc2c(=O)[nH]1 to produce CCSc1ccccc1-c1nc(Br)c2ccc(C(F)(F)F)cc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.