O=C(O)CCCN1C(=O)C2C3C=CC(C2C1=O)C1C(=O)N(CCCC(=O)O)C(=O)C31
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?