CCN(c1ccc(OC)cc1)S(=O)(=O)c1ccc2c(c1)CCN2C(=O)CCC(=O)O
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?