Cc1ccc(NC(=O)CN2C(=O)CN=C(c3ccccc3)c3ccccc32)cc1Cl
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?