Cc1ccc(-n2c(SCC(=O)NN=C(S)Nc3ccccc3)nc3ccccc3c2=O)cc1
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?