Using Cc1cc(C)c(N)c(Br)c1, CC1=C(C)C([Si](C)(C)Cl)C(C)=C1C to produce CC1=C(C)C([Si](C)(C)Nc2c(C)cc(C)cc2Br)C(C)=C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.