CCCCCCCCCCCC(=O)Oc1c(Cl)cc(Cl)c(OC(=O)C(=O)Oc2c(Cl)cc(Cl)c(OC(=O)CCCCCCCCCCC)c2Cl)c1Cl
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?