CC1CCCC(C)N1C(=O)Cn1cc(/C=C2/C(=O)Nc3ccccc32)c2ccccc21
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?