NS(=O)(=O)c1ccc(Nc2nc3ccccc3nc2NS(=O)(=O)c2cccc([N+](=O)[O-])c2)cc1
For non-ionizable compounds Log P = Log D throughout pH range, whereas for ionizable compounds Log D takes into account the partition of both ionized and non-ionized forms.  What is log D of this molecule?