Cc1cc(C(=O)N[C@@H](c2ccccc2)[C@]2(C)C[C@H]2[C@@H](C)C(=O)Nc2ccc3ccccc3c2)no1
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?