CCOC(=O)C1(Cc2cccc(OC)c2)CCCN(C(=O)CNC(C)=O)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?