CCN(Cc1ccccc1)C(=O)C1CCC(CNS(=O)(=O)c2ccc3c(c2)CCCC(=O)N3)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?