CCN(CC)c1ccc2cc(C(=O)Nc3nc(C45CC6CC(CC(C6)C4)C5)cs3)c(=O)oc2c1
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?