CN(C)C(CNC(=O)c1cccc(S(=O)(=O)N2CCN(c3ccccc3)CC2)c1)c1ccccc1
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?