CCc1ccc(CNC(=O)C(C)n2ccc3cc(S(=O)(=O)N4CCCCCC4)ccc32)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?