CC(=O)N1c2ccc(S(=O)(=O)NCC3CCC(C(=O)Nc4ccc(C)cc4)CC3)cc2CC1C
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?