Using CC(=O)Nc1cc(C(=O)NCc2cnc(OCC(F)(F)F)c(Br)c2)ccn1, OB(O)c1ccccc1 to produce CC(=O)Nc1cc(C(=O)NCc2cnc(OCC(F)(F)F)c(-c3ccccc3)c2)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.