Using C[Si](C)(C)CCOCn1cnc(Br)c1, OB(O)c1ccc2ccccc2c1 to produce C[Si](C)(C)CCOCn1cnc(-c2ccc3ccccc3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.