CCCCc1ccc(Nc2nc3c(ncn3C3OC(COC(C)=O)C(OC(C)=O)C3OC(C)=O)c(=O)[nH]2)cc1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?