Using [N-]=[N+]=[N-], Cc1c(Cl)cccc1CN(C(=O)CCl)c1nc(N2CCOCC2)sc1C#N to produce Cc1c(Cl)cccc1CN(C(=O)CN=[N+]=[N-])c1nc(N2CCOCC2)sc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.