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