CC(C)(C)N/N=C(/Cc1nc2c3c(ccc2nc1O)C(=O)c1ccccc1C3=O)C(=O)NC1=C(Cl)C(=O)c2ccccc2C1=O
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?