Cc1ccc(C(=O)O)cc1-c1ccc(/C=C2\SC(=O)N(CC(=O)Nc3ccc4c(c3)OCO4)C2=O)o1
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?