Cc1nnc(O)c2c(NC(=O)CSc3nnnn3-c3ccccc3)oc(C)c12
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?