CCOc1ccc(C2C(C(=O)c3ccc4c(c3)OCCO4)=C(O)C(=O)N2CCCN2CCOCC2)cc1OC
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?