Using COC(=O)c1ccc2c(C3CCCCC3)c(-c3ccc(OC)cc3)[nH]c2c1Cl, CC(C)(C)[Si](C)(C)OCCBr to produce COC(=O)c1ccc2c(C3CCCCC3)c(-c3ccc(OC)cc3)n(CCO[Si](C)(C)C(C)(C)C)c2c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.