Cc1c(CC(=O)O)c(=O)oc2cc3occ(-c4ccc(F)cc4)c3cc12
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?