Using C=CCBr, CC(C)[Si](OCc1cc(Br)c(CO)cc1Cl)(C(C)C)C(C)C to produce C=CCOCc1cc(Cl)c(CO[Si](C(C)C)(C(C)C)C(C)C)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.