Using CCOC(=O)C(C)Oc1ccc2c(c1)N(C)C(=O)N(c1ccc(Cl)cc1)S2(=O)=O to produce CC(Oc1ccc2c(c1)N(C)C(=O)N(c1ccc(Cl)cc1)S2(=O)=O)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.