Cc1ccc(NC(=O)CSc2nc3c(oc4ccccc43)c(=O)n2Cc2ccco2)cc1F
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?