C=C1C(C)C2C(Cc3ccccc3)NC(=O)C23OC(=O)/C=C\CC(=O)CCC(C)C/C=C/C3C1O
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?