Cc1ccc(N2CCN(S(=O)(=O)c3c(C)[nH]c(=O)[nH]c3=O)CC2C)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?