Using O=S([O-])[O-], CS(=O)(=O)OCc1cccc(OCc2ccccc2)c1 to produce O=S(=O)([O-])Cc1cccc(OCc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.