CC(=O)OC1CC[C@]2(C)C(CC[C@@]3(C)C2C(=O)C=C2C4C(C)C(C)CC[C@@]4(C(=O)O)CCC23C)C1(C)C
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?