Using CC(C)(C)OC(=O)N[C@@H]1CCCN(c2c(Br)cnc3[nH]cc(NC(=O)c4cccc(C(F)(F)F)c4)c23)C1 to produce N[C@@H]1CCCN(c2c(Br)cnc3[nH]cc(NC(=O)c4cccc(C(F)(F)F)c4)c23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.