CCCCn1c(N)c(N(CC(C)C)C(=O)c2cccc(S(=O)(=O)N3CCCCC3)c2)c(=O)[nH]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?