N/N=C(\C(=O)Nc1ccc([N+](=O)[O-])cc1)C(C1=Nc2cc([N+](=O)[O-])ccc2NC1)[N+](=O)[O-]
The distribution coefficient ( LogD ) is important for the analysis of the drug candidate properties in various biologic media with different pH values.  What is the distribution coefficient of this molecule?