CC(C)=CCc1cc2c(cc1O)OC[C@H]1c3cc4c(cc3O[C@@H]21)OCO4
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?