Cc1ccc2sc(N(Cc3cccnc3)C(=O)CCS(=O)(=O)c3ccccc3)nc2c1C
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?