Using C[Si](C)(C)c1cc2nnc(-c3ccccc3F)n2nc1Cl, FC(F)(Br)C(F)(F)Br to produce Fc1ccccc1-c1nnc2cc(Br)c(Cl)nn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.