CCOC(=O)C1C(c2ccccc2)C(C(=O)OCC)S(=O)(=O)C(CCN(CC)CC)S1(=O)=O
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?