Cc1ccc(-c2nn3c(C)nnc3c3ccccc23)cc1S(=O)(=O)NCCO
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?