Nc1c(S(=O)(=O)[O-])cc(NC(=O)c2ccccc2)c2c1C(=O)c1ccccc1C2=O.[Na+]
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?