O=S(=O)(O)c1cc(O)c2c(O)c(/N=N\c3cccc4ccccc34)c(S(=O)(=O)O)cc2c1
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?