Using [O-][I+3]([O-])([O-])[O-], C=Cc1cccc2c1ccn2S(=O)(=O)c1cc(C)ccc1OC to produce COc1ccc(C)cc1S(=O)(=O)n1ccc2c(C=O)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.