Using O=C(OC(Cl)(Cl)Cl)OC(Cl)(Cl)Cl, N[C@@H](Cc1ccccc1)C(=O)O to produce O=C1N[C@@H](Cc2ccccc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.