CCN1CCN(C(c2cccs2)C(C)NC(=O)c2cccc(OC)c2OC)CC1
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?