Using NC[C@H](NC(=O)OCc1ccccc1)C(=O)O, O=S(=O)(Cl)c1ccc2ccccc2c1 to produce O=C(N[C@@H](CNS(=O)(=O)c1ccc2ccccc2c1)C(=O)O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.