Using O=[N+]=O, Cc1csc(C(C)(C)C(=O)N2CCCC2)c1 to produce Cc1cc(C(C)(C)C(=O)N2CCCC2)sc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.