Using [OH-], COc1ccc2c(c1)CC(=O)c1cc(C(C)C(N)=O)ccc1S2 to produce COc1ccc2c(c1)CC(=O)c1cc(C(C)C(=O)O)ccc1S2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.