Cc1c(C(=O)Nc2cccc(Cl)c2)oc2ccc(S(=O)(=O)N3CCC4(CC3)OCCO4)cc12
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?