CC(=O)c1c(O)c(C)c(O)c2c1OC1=Cc3c(c(C)nn3-c3ccccc3)C(=O)C12C
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?