CC(C)CC(=O)Nc1ccc(S(=O)(=O)Nc2cc3c(cc2N2CCOCC2)n(C)c(=O)c(=O)n3C)cc1
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?