Br.Oc1ccc(C[C@@H]2CN[C@H](Cc3ccc(O)c(Br)c3)CN2)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?