Cc1cccc(N(Cc2ccccc2)C(=O)CSC(C)C(=O)Nc2cc(C)on2)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?