Using Nc1nc(-c2nn(Cc3ccccc3F)c3ncccc23)nc2[nH]c(=O)n(CC(F)(F)F)c12 to produce O=c1[nH]c2nc(-c3nn(Cc4ccccc4F)c4ncccc34)ncc2n1CC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.