Cc1ccc(C)c(NC(=O)CN2C(=O)C3(SCC(=O)N3c3ccc(C)c(C)c3)c3ccccc32)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?