CCN(CC)CCNC(C(=O)Nc1cccc(C(C)=O)c1)c1ccccc1.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?