Using O=[N+]([O-])c1c(F)cccc1F, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(C(=O)OCC)c1cccc(F)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.