CCCCCCCSCC1C(=O)C23C(O)C1CCC2C12COC3(O)C(O)C1C(C)(C)CCC2O
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?