Cc1cn(C2OC(CC(=O)Oc3ccccc3)C(O)C2O)c(=O)[nH]c1=O
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?