Using CC1CCC(C(=O)N(c2cc(-c3ccccc3)sc2C(=O)O)C(C)CN=[N+]=[N-])CC1 to produce CC1CCC(C(=O)N(c2cc(-c3ccccc3)sc2C(=O)O)C(C)CN)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.