O=C(O)CCC(=O)N1CCC(n2nnc3cc(C(F)(F)F)ccc32)CC1
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?