Using CC(C)=CCC/C(C)=C/CBr, CC(C)(C)[Si](C)(C)OCCC/C(O)=C/O to produce CC(C)=CCC/C(C)=C/COCC(O)CCCO[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.