C=CCC[C@@H](Cc1ccc(F)cc1)C(=O)OC[C@@H](NC(=O)[C@H](CC=C)CC(=O)N(CCO)Cc1ccccc1)c1ccccc1
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?