O=C(c1ccccc1[N+](=O)[O-])N1CCCN(C(=O)c2ccccc2[N+](=O)[O-])CC1
For non-ionizable compounds Log P = Log D throughout pH range, whereas for ionizable compounds Log D takes into account the partition of both ionized and non-ionized forms. What is the negative log D of this molecule?