Using CC([O-])=S, C=CCOC(=O)c1csc(N2CC(OS(C)(=O)=O)C2)n1 to produce C=CCOC(=O)c1csc(N2CC(SC(C)=O)C2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.