COc1ccc2c(c1)CCc1c(C(=O)Nc3ccc(OC)c(OC)c3)noc1-2
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?