CCC(C)(C)C1CCC2(CC1)NC(=O)N(CC(=O)N(C)Cc1ccc(OC(F)F)cc1)C2=O
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?