CCOc1ccc(-c2nonc2NC(=O)c2oc3cc(C)c(C)cc3c2C)cc1OCC
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?