CC1CCN(S(=O)(=O)c2ccc3c(c2)N(CC(=O)Nc2ccc(F)c(Cl)c2)C(=O)CO3)CC1
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?