Cc1cccc(C)c1-n1nnnc1C(CCc1ccccc1)N1CCC(n2c(O)nc3ccccc32)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?