COc1ccc(N2CCN(C(CNS(=O)(=O)c3c(C)cc(C)cc3C)c3ccco3)CC2)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?