Using COC(=O)c1csc(-n2c(=O)n(CC(=O)OC(C)(C)C)c3ccccc32)n1 to produce COC(=O)c1csc(-n2c(=O)n(CC(=O)O)c3ccccc32)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.