Cc1nc(N2CCN(c3ccccn3)CC2)c2c(C)c(C(=O)Nc3ccccc3F)sc2n1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?