Using COC(Cc1c(C(C)(C)C)[nH]c2cc([N+](=O)[O-])ccc12)OC to produce CC(C)(C)c1[nH]c2cc([N+](=O)[O-])ccc2c1CC=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.