Using O=C(OC(=O)C(F)(F)F)C(F)(F)F, NCCc1ccc([N+](=O)[O-])cc1 to produce O=C(NCCc1ccc([N+](=O)[O-])cc1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.