Cc1n[nH]c(O)c1C(c1c(C)n[nH]c1O)c1cn(Cc2ccccc2Cl)c2ccccc12
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?