Using CC(C)[Si](OCc1cc(F)ccc1Br)(C(C)C)C(C)C, COB(OC)OC to produce CC(C)[Si](OCc1cc(F)ccc1B(O)O)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.