CC(C)c1nn2c(=O)cc(COC(=O)c3ccc(NC(=O)C4CCCCC4)cc3)nc2s1
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?