CCC(C)c1ccc2oc(-c3ccc(NC(=O)Cn4cnc5c(=O)n(C)c(=O)n(C)c54)cc3)nc2c1
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?