Using CC(C)(C)OC(=O)CBr, CSc1c(O)ccc2c1[nH]c1ccccc12 to produce CSc1c(OCC(=O)OC(C)(C)C)ccc2c1[nH]c1ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.