Using COC(=O)c1cc(C)c(Br)c(SCc2cccc(Cl)c2O[Si](C)(C)C(C)(C)C)c1 to produce COC(=O)c1cc(C)c(Br)c(SCc2cccc(Cl)c2O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.