CC(=O)OCC1=C(C(=O)O)N2C(=O)C(NC(=O)CCn3nc(C(F)(F)F)c(Br)c3C3CC3)C2SC1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?