Using FC(F)(F)c1ccccc1CBr, O=c1nc[nH]c2nc(N3CCOCC3)sc12 to produce O=c1ncn(Cc2ccccc2C(F)(F)F)c2nc(N3CCOCC3)sc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.