CCN(Cc1ccccc1)S(=O)(=O)c1ccc(F)c(C(=O)Nc2cc(C(F)(F)F)ccc2Cl)c1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?