Cc1ccc(NC(=O)CSc2nnc(NC(=O)c3ccc(S(=O)(=O)N4CCOCC4)cc3)s2)cc1
The negative base-10 logarithmic of dissociation constant (pka) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?