Cc1cn(C2CC(O)C(Cn3nncc3Cn3ccc(=O)[nH]c3=O)O2)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?