CCCOc1ccc(CNC(=O)Cn2cc3c(n2)-c2c(oc(C(=O)N4CCOCC4)c2C)CC3)cc1
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?