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