CCc1ccc(-c2n[nH]c(SCC(=O)c3c(N)n(C)c(=O)n(C)c3=O)n2)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?