NC(=O)CC(NC(=O)Cc1cccc2ccccc12)c1ccc(N2CCC(N3CCCC3)CC2)c([N+](=O)[O-])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?