CCOC(=O)c1c(-c2cccc(OC)c2)nn2c(C)c(CCC(=O)O)c(C)nc12
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?