Cc1cc2c(cc1S(=O)(=O)CCC(=O)N1CCCCC1C)OCC(=O)N2
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?