C/C(=N/O)c1ccc2c(c1)/C(=N/O)c1cc(/C(C)=N/O)ccc1-2
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?