CC#Cc1c(O)c2c(c(O)c1C#CC)C(=O)c1ccccc1C2=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?