Cc1ccc(C)c(-n2cc(CN3CCN(C(=O)c4nc[nH]n4)CC3)c(-c3ccccc3)n2)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?