Using C1N2CN3CN1CN(C2)C3, O=C(c1ccccc1F)c1cc(Cl)ccc1N(CC(F)(F)F)C(=O)CBr to produce O=C1CN=C(c2ccccc2F)c2cc(Cl)ccc2N1CC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.