CCc1ccc(-c2cc(C(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)c3ccccc3n2)s1
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?