Using CC(C)c1cc(Br)cc(C(C)C)c1N, CC1=C(C)C([Si](C)(C)Cl)C(C)=C1C to produce CC1=C(C)C([Si](C)(C)Nc2c(C(C)C)cc(Br)cc2C(C)C)C(C)=C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.