CCc1nnc(NC(=O)c2cccc(S(=O)(=O)N3CCCCC3)c2)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?