O=C(O)c1cc(NC(=O)c2cccc(C(=O)Nc3cc(C(=O)O)cc(C(=O)O)c3)c2)cc(C(=O)O)c1
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?