Using COC(=O)CSc1cn(S(=O)(=O)c2ccc(Cl)c(Cl)c2)c2ccc(OC)cc12 to produce COc1ccc2c(c1)c(SCC(=O)O)cn2S(=O)(=O)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.