N#CC1=C(N)Oc2[nH]nc(-c3ccc(F)cc3)c2C1c1ccncc1
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?