Using CC1(N2C(=O)c3csc([N+](=O)[O-])c3C2=O)CCC(=O)NC1=O to produce CC1(N2C(=O)c3csc(N)c3C2=O)CCC(=O)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.