Cc1ccc(Cn2c(C(=O)O)c(CNCc3ccc(C)o3)c3ccc(C)cc32)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?