Using O=c1[nH]c(-c2ccccc2C(F)(F)F)cc2ccc(NCCCO)cc12, BrC(Br)(Br)Br to produce O=c1[nH]c(-c2ccccc2C(F)(F)F)cc2ccc(NCCCBr)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.