COc1ccc(S(=O)(=O)NC(C)(C)CO)cc1-c1nnc2c3ccccc3c(C)nn12
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?