CCC(=O)N(c1ccc(C(=O)O)cc1)c1nc(-c2ccc(OC)cc2)c(C)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?