Cc1nc(C)c(C(=O)NNC(=O)Cc2ccccc2)cc1C(=O)NNC(=O)Cc1ccccc1
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?