O=C(c1ccc(S(=O)(=O)Cc2ccccc2F)c([N+](=O)[O-])c1)N1CCCC1
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?