CC(NC(=O)CN(C)S(=O)(=O)c1ccc2c(c1)c(=O)n(C)c(=O)n2C)c1ccccc1
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?