Using O=C1CCC(=O)N1Br, CNc1ccc(C(F)(F)F)cc1[N+](=O)[O-] to produce CNc1c(Br)cc(C(F)(F)F)cc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.