Using C[Si](C)(Cl)Cl, COc1c(C(C)(C)C)cc2c(c1-c1cc(C(C)(C)C)cc(C(C)(C)C)c1)CC(C)=C2 to produce COc1c(C(C)(C)C)cc2c(c1-c1cc(C(C)(C)C)cc(C(C)(C)C)c1)C=C(C)C2[Si](C)(C)Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.