COc1ccc(NC(=O)C(NC(=O)/C=C\c2ccc3c(c2)OCO3)c2ccc(OC)cc2)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?