Using [N-]=[N+]=NCc1cn(-c2ccccc2Cl)c2cc(Cl)ccc2c1=O to produce NCc1cn(-c2ccccc2Cl)c2cc(Cl)ccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.