Using CCOC(=O)c1c(-c2cccc(C(F)(F)F)c2)[nH]c2c([N+](=O)[O-])cccc2c1=O to produce O=c1cc(-c2cccc(C(F)(F)F)c2)[nH]c2c([N+](=O)[O-])cccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.