CN(C(=O)c1cccc(NC(=O)Cc2ccc(NC(=O)C3CCN(C(=O)C4CCCCC4)CC3)cc2)c1)C1CCC1
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?