O=C1CC(c2ccc(OCCCCCOc3ccc(C4CC(=O)NC4=O)cc3)cc2)C(=O)N1
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?