Cl.OC(c1cc2ccc(C(F)(F)F)cc2c2cc(C(F)(F)F)ccc12)C1CCCCN1
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?