COc1ccc2c(c1)c1c(c(=O)n(-c3ccccc3)c(=O)n1CC(=O)Nc1ccc(F)cc1)n2C
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?