Using O=C(O)CNC(=O)c1cc2cc(Cl)ncc2[nH]1, OC1CNC1 to produce O=C(NCC(=O)N1CC(O)C1)c1cc2cc(Cl)ncc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.