Using CCO, CC(=O)c1ccc(NS(C)(=O)=O)c(Sc2ccccc2C)c1 to produce CC(=O)c1ccc(NS(C)(=O)=O)c(Oc2ccccc2S(C)(=O)=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.