Using N[C@@H](Cc1ccccc1)C(=O)O, O=C1Nc2cc(Cl)ccc2C1(Cl)Cc1cccc(Cl)c1 to produce O=C(O)C(Cc1ccccc1)NC1(Cc2cccc(Cl)c2)C(=O)Nc2cc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.