Cc1cc(C)cc(-n2c(SCC(=O)N3CCC(C)CC3)nc3c([nH]c4ccccc43)c2=O)c1
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?