CCCC(CCC)C(=O)NNc1cc(O)c2c(=O)n(C)c(=O)n(C)c2n1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?