CC1CCN(C(=O)c2nc[nH]c2C(=O)N[C@@H](C)C(=O)OCc2ccccc2)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?