CC(=O)N1c2ccc(S(=O)(=O)N3CCC(C(=O)Nc4ncccc4C)CC3)cc2CC1C
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?