Using CC(C)(C)[Si](C)(C)OCCCBr, O=Cc1ccc2[nH]c(=O)oc2c1 to produce CC(C)(C)[Si](C)(C)OCCCn1c(=O)oc2cc(C=O)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.