Using [N-]=[N+]=[N-], Clc1nc(N2CCOCC2)c2nc(CBr)ccc2n1 to produce [N-]=[N+]=NCc1ccc2nc(Cl)nc(N3CCOCC3)c2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.