CC1(C)CN(CC(=O)O)CC(Cc2ccc(OCC(=O)O)cc2)N(CC(=O)O)CC(C)(C)SS1
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?