Cc1cc(C)c(C)c(S(=O)(=O)Nc2ccccc2C(=O)NN2CCOCC2)c1C
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?