CCc1ccccc1NC(=O)c1ccc(Cn2nc(N3CCN(c4ccccc4)CC3)ccc2=O)o1
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?