Using CCc1cc(Br)ccc1CCO[Si](C)(C)C(C)(C)C, COB(OC)OC to produce CCc1cc(B(O)O)ccc1CCO[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.