Cc1ccc(-n2nc(C)c(C3(O)C(=O)N(C(C)C)c4ccccc43)c2N)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?