CCOC(=O)c1cccc(NC(=O)c2cc(C)nc3c2c(C)nn3-c2ccc(C)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?