N#Cc1cccc(NC(=O)N2CC[C@@]3(CCCN(S(=O)(=O)c4ccccc4)C3)C2)c1
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?