CCOC(=O)C1CCN(C(=O)CCCCn2c(=O)[nH]c3ccccc3c2=O)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?