Using CCOC(=O)c1c(F)ccc([N+](=O)[O-])c1N, OCC(F)(F)F to produce CCOC(=O)c1c(OCC(F)(F)F)ccc([N+](=O)[O-])c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.