Cn1c(=O)[nH]c(=O)c2c1nc(CN1CCN(Cc3ccccc3)CC1)n2CC(N)=O
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?