Cc1cc(N2C(=O)C(O)=C(C(=O)c3ccco3)C2c2cccc(Oc3ccccc3)c2)no1
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?