CCc1ccc(C2c3c(-c4ccccc4O)n[nH]c3C(=O)N2Cc2cccnc2)cc1
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?