Using CCOC(=O)c1sc(-c2ccc(Cl)cc2)c(C)c1-c1ccc(S(N)(=O)=O)c(C)c1 to produce Cc1cc(-c2c(C(=O)O)sc(-c3ccc(Cl)cc3)c2C)ccc1S(N)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.