Cc1ccccc1NC(=O)CSCn1nnc2c(O)nc(Cc3ccc(F)cc3)nc21
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?