CC1(C)Cc2cccc(OCC(=O)Nc3cc(C(F)(F)F)ccc3N3CCOCC3)c2O1
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?