Using O=C([O-])[O-], Cc1nccn1CCCCN1C(=O)[C@@H](CC#N)O[C@H](c2cccc3ccccc23)c2cc(Cl)ccc21 to produce Cc1nccn1CCCCN1C(=O)[C@@H](CC(N)=O)O[C@H](c2cccc3ccccc23)c2cc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.