CCn1c(=O)n(Cc2ccccc2C)c(=O)n([C@@H](Cc2ccccc2)C(=O)O)c1=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?