Using C[Si](C)(Cl)CBr, CC(C)(C)OC(=O)N1CCN(c2cc(Br)cc(C(F)(F)F)c2)CC1 to produce CC(C)(C)OC(=O)N1CCN(c2cc(C(F)(F)F)cc([Si](C)(C)CBr)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.