Cc1c(C(=O)N2CCCCC2)c(S(=O)(=O)NCc2ccc(Cl)cc2)c(C)n1C
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?