CCCCCCCCCCCCCCCCCCNc1ccn(C2OC(COP(=O)(O)OCC3OC(n4ccc(N)nc4=O)C(O)C3O)C(O)C2O)c(=O)n1
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?