CCc1ccccc1NC(=O)COc1ccc2c(=O)c(Oc3cc(C)ccc3C)coc2c1
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?