NC1=NC(=O)/C(=C/c2cn(CCC(=O)O)nc2-c2ccc(F)cc2)S1
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?