O=C(OC[C@@H]1O[C@@](O)(COC(=O)c2cccnc2)[C@H](OC(=O)c2cccnc2)[C@H]1OC(=O)c1cccnc1)c1cccnc1
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?