Cc1cccc(Cn2c(N(C)Cc3ccccc3)nc3c2c(=O)[nH]c(=O)n3C)c1
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?