Using COc1cc(F)ccc1-c1cnc2nc(C(C)(C)O)cnn12, O=C1CCC(=O)N1Br to produce COc1cc(F)c(Br)cc1-c1cnc2nc(C(C)(C)O)cnn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.