Using Nc1ccc(Br)cc1, CC1=C(C)C([Si](C)(C)Cl)C(C)=C1C to produce CC1=C(C)C([Si](C)(C)Nc2ccc(Br)cc2)C(C)=C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.