Cc1ccc(F)c(NC(=O)Nc2ccc(-c3ccc4nccnc4c3N)cc2)c1
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?