Using O=Cc1cc(F)ccc1[N+](=O)[O-], CCCc1cc(C(OCOC)(C(F)(F)F)C(F)(F)F)ccc1O to produce CCCc1cc(C(OCOC)(C(F)(F)F)C(F)(F)F)ccc1Oc1ccc([N+](=O)[O-])c(C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.