CCCC(c1nnnn1CC(=O)OCC)N(Cc1cc2c(C)cc(C)cc2nc1O)C1CCCC1
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?