CCN(CC(=O)Nc1c(F)cccc1F)C(=O)CCc1nc2cc(S(=O)(=O)N3CCOCC3)ccc2n1C
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?