Using CC(C)(C)[Si](C)(C)Oc1cccc(Br)c1, O=Cc1ccc(Br)cc1 to produce CC(C)(C)[Si](C)(C)Oc1cccc(C(O)c2ccc(Br)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.