CCN(CC)S(=O)(=O)c1cccc(C(=O)N[C@H](C(=O)O)C(C)C)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?