O=C(CN1CCN(C(=O)c2ccco2)CC1)Nc1c2c(nc3c1CCC3)CCCC2.O=C(O)C(=O)O
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?