CCc1cccc(C)c1NC(=O)Cn1c(=O)n(-c2cccc(C)c2)c(=O)c2c1c1cc(C)ccc1n2C
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?