CCC(C)C(NC(=O)/C(=C\c1ccccc1)NC(=O)c1ccc(OC)cc1)C(=O)O
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?