Cn1c(=O)c(=O)n(C)c2cc(S(=O)(=O)Nc3ccc4c(c3)OCCO4)ccc21
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?