Cc1c(Cl)cnn1CC(=O)NC1C(=O)N2C(C(=O)O)=C(CSc3nnnn3C)CSC12
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?