COc1cc2[nH]c(=O)n(Cc3ccc(C(=O)N4CCN(c5cccc(C)c5C)CC4)cc3)c(=O)c2cc1OC
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?