Using O=C(OCC1c2ccccc2Oc2ccccc21)ON1C(=O)CCC1=O, N[C@@H](Cc1ccccc1)C(=O)O to produce O=C(N[C@@H](Cc1ccccc1)C(=O)O)OCC1c2ccccc2Oc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.