Using O=[N+]([O-])c1ccc(CCNS(=O)(=O)c2cccc3[nH]nnc23)cc1 to produce Nc1ccc(CCNS(=O)(=O)c2cccc3[nH]nnc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.