CCCCN(C(=O)c1[nH]c(C)c(C(C)=O)c1C)c1c(N)n(CCCC)c(=O)[nH]c1=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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?