Cc1ccc(CNC(=O)c2ccc(Cn3c(=O)c4ccccc4n(CC(=O)Nc4c(C)cc(C)cc4C)c3=O)cc2)cc1
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?