Cc1nc(C)c(C(=O)N(c2ccc(C)c(C)c2)C(C(=O)NCc2ccco2)c2ccccc2)s1
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?