Using COC(=O)CSc1cnc(NS(=O)(=O)c2cccc(Cl)c2Cl)c(OC)n1 to produce COc1nc(SCC(=O)O)cnc1NS(=O)(=O)c1cccc(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.