Using O=C(NCc1cccc([N+](=O)[O-])c1)C(F)(F)F, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)CN(Cc1cccc([N+](=O)[O-])c1)C(=O)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.