Using CC(O)(COS(C)(=O)=O)c1nc(Br)ccc1F, [N-]=[N+]=[N-] to produce CC(O)(CN=[N+]=[N-])c1nc(Br)ccc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.