COc1ccc(-c2cn(-c3ccc(C)cc3)c(S(=O)(=O)CC(=O)Nc3ccc(F)cc3)n2)cc1
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?