Using [O-][I+3]([O-])([O-])[O-], O=c1c2c[nH]c3c(c-2nn1-c1ccc(Cl)cc1)CSCC3 to produce O=c1c2c[nH]c3c(c-2nn1-c1ccc(Cl)cc1)CS(=O)CC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.