Cc1ccc(NC(=O)Cn2cc(S(=O)(=O)N3CCCC3)c(S(=O)(=O)N3CCCC3)c2)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?