Cc1cc(C)c(C2C(C#N)=C(N)Oc3[nH]nc(C)c32)cc1CN1CCOCC1
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?