Using COC(=O)c1ccc(C2=Nc3ccccc3Oc3c(SC)cccc32)cc1, [O-][I+3]([O-])([O-])O to produce COC(=O)c1ccc(C2=Nc3ccccc3Oc3c2cccc3S(C)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.