Cc1ccc(N=C(S)Nc2ccc(C(C)C)cc2)cc1S(=O)(=O)N1CCCCCC1
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?