CCOC(=O)c1ccc(Oc2c(C)oc3c(CN4CCN(C)CC4)c(O)ccc3c2=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?