CCCN1Cc2cccc(C(=O)NC(CC(=O)OCC)c3ccc(OCC)c(OC)c3)c2C1=O
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?