CC(=O)N1CCN(S(=O)(=O)c2cccc(C(=O)NNC(=O)Cn3nc(C)cc3C)c2)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?