CC(Oc1cc(-n2cnc3ccc(OCC4CCN(C)CC4)cc32)sc1C(N)=O)c1ccccc1C(F)(F)F
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?