Using O=S(=O)(O)O, O=S(=O)([O-])c1cc(O)c2ccc3c(S(=O)(=O)[O-])cc(S(=O)(=O)[O-])c4ccc1c2c34 to produce O=S(=O)([O-])c1cc2c(O)ccc3ccc4cccc1c4c32, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.