COc1ccc(C2c3c(n(C)c4ccccc34)C(=O)N2CC(=O)Nc2ccccc2F)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?