CNS(=O)(=O)c1cccc(C(=O)OCC(=O)/C=C2/N(C)c3ccccc3C2(C)C)c1
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?