CCOc1ccc(C(C)C)cc1S(=O)(=O)Nc1cccc(-c2ccc(N3CCOCC3)nn2)c1
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?