Cc1ccc(NS(=O)(=O)c2cc(C(=O)N3CCCC3)ccc2C)cc1C
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?