CCOC(=O)C1C(c2ccc(O)c(OC)c2)c2c(n[nH]c2O)CC1(C)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?