Using O=C[C@@H]1CCCN1C(=O)CCC(=O)NCc1ccc(Cl)cc1, NO to produce O=C(CCC(=O)N1CCC[C@H]1C=NO)NCc1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.