Cc1ccc(-n2c(O)nc3c(C(N)=O)nc(-c4ccc(C)o4)nc32)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?