Cc1ccc(N2C(=O)[C@@H]3[C@@H]4O[C@@H]([C@H]5ON=C(c6ccccc6Cl)[C@H]54)[C@@H]3C2=O)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?