CC1(C)NC(=O)N(CC(O)CNC23CC4CC(CC(C4)C2)C3)C1=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?