CCOc1cc2[nH]c(=O)n(Cc3ccc(C(=O)NCCCN4CCCC4=O)cc3)c(=O)c2cc1OCC
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?