CCN(C(=O)Cn1c(=O)n(Cc2ccccc2)c(=O)c2ccccc21)c1cccc(C)c1
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?