Using CC(C)(C1C=Cc2ccccc21)C1C=Cc2ccccc21, C[Si](C)(C)Cl to produce CC(C)(C1C=C([Si](C)(C)C)c2ccccc21)C1C=C([Si](C)(C)C)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.