C=C1CC[C@H]2[C@](C)(/C=C/[C@@H](O)C(C)(C)O)CCC[C@]2(C)[C@H]1CC(=O)NCCS(=O)(=O)O
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?