Cc1ccccc1C(=O)N1CCc2cc(-c3nc(NC(=O)Cc4ccc5c(c4)OCO5)sc3C)ccc21
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?