Cc1cc[n+]2cc(-c3cccc([N+](=O)[O-])c3)c(-c3cccc([N+](=O)[O-])c3)cc2c1.[Br-]
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 the negative logD of this molecule?