CCN(CC)S(=O)(=O)c1ccc(N2CCOCC2)c(NC(=O)C2CSC3(C)CCC(=O)N23)c1
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?