Using ClCl, NS(=O)(=O)c1ccc(-n2nccc2-c2ccc(Cl)cc2)cc1 to produce NS(=O)(=O)c1ccc(-n2ncc(Cl)c2-c2ccc(Cl)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.