Cc1c(C(=O)N2CC3(CC(c4cccc(NC(=O)[C@H]5CCC(=O)N5)c4)=NO3)C[C@@H]2C(N)=O)cc([N+](=O)[O-])cc1[N+](=O)[O-]
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?