CCOC(=O)[C@H]1Nc2ccc([N+](=O)[O-])cc2C2c3ccccc3CC21
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?