CCc1ccccc1NC(=O)Cn1nc(N2CCN(c3ccccc3OC)CC2)ccc1=O
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?