Using O=C(O)C(=Cc1ccc([N+](=O)[O-])cc1)c1cccc(C(F)(F)F)c1 to produce Nc1ccc(CC(C(=O)O)c2cccc(C(F)(F)F)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.