CC1(C(=O)NS(=O)(=O)Cc2ccccc2C(F)(F)F)CCN1C(=O)C/C=C/c1ccccc1
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?