COc1c2c(c(C)c3c1C(=O)OC3)O[C@@]1(C)CC[C@@]3(O)C(C)(C)OC(=O)CC[C@]3(C)[C@H]1C2
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?