Cc1ccc(CN2CC(C(=O)Nc3ccc(C)c(S(=O)(=O)N4CCCCC4)c3)CC2=O)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?