COC(=O)C(NC(=O)COc1ccccc1)(Nc1nc2c(s1)CCCC2)C(F)(F)F
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?