COC(=O)c1[nH]c(C)c(C(=O)C2=C(O)C(=O)N(CCN3CCOCC3)C2c2ccccc2OC)c1C
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?