CC1CC2C3CCC4=CC(=O)C=C[C@@]4(C)[C@]3(F)C(O)C[C@]2(C)[C@]1(O)C(=O)COP(=O)([O-])[O-].[Na+].[Na+]
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?