CCOC(=O)c1sc(N2C(=O)c3oc4cc(C)c(C)cc4c(=O)c3C2c2cccc(O)c2)nc1C
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?