COc1ccc(C2c3ccc(O)cc3Oc3ncn(Cc4ccccc4)c(=N)c32)cc1OC
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?