Using [N-]=[N+]=[N-], O=C(c1cc(F)ccc1CBr)N1CCOCC1 to produce [N-]=[N+]=NCc1ccc(F)cc1C(=O)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.