CCc1c(OC(C)=O)c2c(NC3OC(COC(C)=O)C(OC(C)=O)C(OC(C)=O)C3OC(C)=O)nc(OC)nc2oc1=O
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?