Cc1c(C(C)C)c(=O)n(-c2ccc(S(=O)(=O)NC3CCCCC3)cc2)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?