CCOC(=O)Cn1c(=O)n(CC2CCCO2)c2nc(-c3cc(OC)ccc3OC)nc(C(N)=O)c21
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?