Using O=C1CCC(=O)N1Br, Cc1c([N+](=O)[O-])cccc1C(F)(F)F to produce O=[N+]([O-])c1cccc(C(F)(F)F)c1CBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.