Nc1c(C(=O)N/N=C/c2cccnc2)oc2nc(-c3ccccc3)cc(-c3ccco3)c12
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?