CC(=O)Nc1ccc(S(=O)(=O)Nc2nc(CN3CCOCC3)nc3sc4c(c23)CCCC4)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?