CCOC(=O)c1c(N/C=C2\C(=O)NC(=S)N(c3ccc(F)cc3)C2=O)sc2c1CCCC2
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?