CCN1C(=O)C(CC(=O)Nc2c(C)cccc2C)Nc2cc(S(=O)(=O)N(C)C)ccc21
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?