O=C1CC(C(=O)N2CCCCC2)n2c(=O)n(-c3ccccc3)c(=O)n2C1
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?