COc1ccc(-c2nc3sc(CCNS(=O)(=O)c4ccc(F)c(C)c4)c(C)n3n2)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?