Using CC(C)(C)[Si](C)(C)OCCOc1ccc(Br)cc1C=O, OB(O)C1CC1 to produce CC(C)(C)[Si](C)(C)OCCOc1ccc(C2CC2)cc1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.