CCOc1ccc(N(CC(=O)NC2CCC(C)CC2)S(=O)(=O)c2c(C)noc2C)cc1
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?