Cc1cc(NC(=O)c2ccc3c(c2)OCCO3)cc(-c2nc3ccccc3o2)c1O
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?