CC1(c2ccc(OC(F)F)cc2)NC(=O)N(/N=C/c2c(O)ccc3ccccc23)C1=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?