CCC(C)NC(=O)Cn1c(=O)n(-c2ccc(OC)cc2)c(=O)c2ccc(C(=O)NCc3ccc(C)cc3)cc21
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?