CCOc1ccc(N(CC(=O)NC2CCCC2)C(=O)CCC(=O)Nc2nc(C)cs2)cc1
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?