Using NO, COC(=O)c1cnc(N2CCN(S(=O)(=O)c3ccc(C(C)=O)cc3)CC2)s1 to produce CC(=O)c1ccc(S(=O)(=O)N2CCN(c3ncc(C(=O)NO)s3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.