Using [N-]=[N+]=[N-], CCOC(=O)c1sc(Cl)nc1-c1cccc(C(F)(F)F)c1 to produce CCOC(=O)c1sc(N=[N+]=[N-])nc1-c1cccc(C(F)(F)F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.