Br.Cc1nn(CCc2nc(-c3ccco3)cs2)c2nc(O)cc(C(F)(F)F)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?