CC1(C)CC(=O)c2c(nc3ccc4ccccc4c3c2-c2ccc(NC(=O)CCCC(=O)Nc3ccc(-c4c5c(nc6ccc7ccccc7c46)CC(C)(C)CC5=O)cc3)cc2)C1
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?