C[C@H]1CCCCO[C@@H](CN(C)S(=O)(=O)c2ccc(F)cc2)[C@H](C)CN([C@@H](C)COC(=O)C(C)(C)C)C(=O)c2cc(NC(=O)Nc3ccccc3)ccc2O1
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?