Using O=C1CCC(=O)N1Br, Cc1ccc(-c2nc3ccccc3n2C(=O)C(F)(F)F)cc1 to produce O=C(n1c(-c2ccc(CBr)cc2)nc2ccccc21)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.