Using O=C(NCCCC[C@@H](NS(=O)(=O)N1CCN(c2ccc(Cl)cc2)CC1)C(=O)NO)OCc1ccccc1 to produce NCCCC[C@@H](NS(=O)(=O)N1CCN(c2ccc(Cl)cc2)CC1)C(=O)NO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.