Using O=Cc1cc(O)ccc1-c1ccc(Cl)cc1, CC(C)(C)[Si](C)(C)OCCBr to produce CC(C)(C)[Si](C)(C)OCCOc1ccc(-c2ccc(Cl)cc2)c(C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.