CN(C)S(=O)(=O)c1cc(NC(=O)COC(=O)C2CSC3(C)CCC(=O)N23)ccc1Cl
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?