O=C(C[n+]1ccn(CCCNP2(=O)C=C(c3ccccc3)OC(c3ccccc3)=C2)c1)c1cccs1.[Br-]
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?