O=C(COc1ccc(Cl)c(Cl)c1)Nc1ccc[n+](Cc2ccc(S(=O)(=O)F)c(Cl)c2)c1.[Br-]
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 negative logD of this molecule?