Using CS(=O)(=O)c1ccc(C(=O)O)c(Cl)c1Cl, CCn1nccc1O to produce CCn1ncc(C(=O)c2ccc(S(C)(=O)=O)c(Cl)c2Cl)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.