Cc1ccc(C)c(S(=O)(=O)N2CCN(C(=O)CCNS(=O)(=O)c3ccc(C)c(C)c3)CC2)c1
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?