C#C/C=C\CCCC/C=C\C#CC#CCCCC#CC#C[C@H](COS(=O)(=O)[O-])OS(=O)(=O)O.[Na+]
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?