O=C1C=C(C2=C(C3=CC(=O)c4ccccc4C3=O)C(=O)c3ccccc3C2=O)C(=O)c2ccccc21
For non-ionizable compounds Log P = Log D throughout pH range, whereas for ionizable compounds LogD takes into account the partition of both ionized and non-ionized forms.  What is logD of this molecule?