Using CN(C)C(=O)Sc1ccc([N+](=O)[O-])c2ccccc12, CC(C)(C)OC(=O)CBr to produce O=C(O)CSc1ccc([N+](=O)[O-])c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.