Using O=C(O)C(C(Oc1ccc(F)cc1[N+](=O)[O-])C(F)(F)F)N(Cc1ccccc1)Cc1ccccc1 to produce Nc1cc(F)ccc1OC(C(C(=O)O)N(Cc1ccccc1)Cc1ccccc1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.