Using CC(=O)Nc1sc(C(=O)OCc2ccccc2)c(C)c1C(=O)OC(C)(C)C to produce CC(=O)Nc1sc(C(=O)O)c(C)c1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.