CCN1CCN(Cc2c(O)ccc3c(C)c(-c4ccc(OC)cc4)c(=O)oc23)CC1
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?