O=S(=O)([O-])c1cc(/N=N/c2c(O)ccc3ccccc23)c2c(S(=O)(=O)O)cccc2c1.[Na+]
LogP, or octanol-water partition coefficient, is a measure of how hydrophilic or hydrophobic a molecule is. What is the negative logarithm of the partition coefficient of this molecule?