Using CCOC(=O)CC(CCCCCNS(=O)(=O)c1ccc(Cl)cc1)CCCCc1cccnc1 to produce O=C(O)CC(CCCCCNS(=O)(=O)c1ccc(Cl)cc1)CCCCc1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.