Using BrCc1ccccc1, O=c1[nH]c(=O)n2c3c1ncn3C(c1cccc(C(F)(F)F)c1)=CC2 to produce O=c1c2ncn3c2n(c(=O)n1Cc1ccccc1)CC=C3c1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.