Using CC(C)(O[Si](C)(C)C(C)(C)C)c1ccc(Br)cn1, CC(C)OB1OC(C)(C)C(C)(C)O1 to produce CC(C)(O[Si](C)(C)C(C)(C)C)c1ccc(B2OC(C)(C)C(C)(C)O2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.