Using N[C@@H](CCO)C(=O)O, O=C(OCc1ccccc1)ON1C(=O)CCC1=O to produce O=C(N[C@@H](CCO)C(=O)O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.