C[C@H]1CC[C@H]2C(=O)N3[C@@H](CC[C@H](C)[C@H]3c3cccc(N4CCCC4=O)c3)C(=O)N2[C@@H]1c1cccc(N2CCCC2=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?