CCC(=O)N(Cc1ccc2c(c1)OCO2)Cc1cc2cc(OC)ccc2nc1O
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?