Cc1ccc(N2C(=O)c3ccccc3C2Nc2ccc(S(=O)(=O)N3CCCCC3)cc2)nc1
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?