Using O=C(NCc1cc(-c2nn(-c3ccc(F)c(Cl)c3)c(=O)[nH]2)c(Cl)cc1F)C(F)(F)F to produce NCc1cc(-c2nn(-c3ccc(F)c(Cl)c3)c(=O)[nH]2)c(Cl)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.