Cc1cc(C)c(S(=O)(=O)N2CCCOC2CNC(=O)C(=O)NCCC2=CCCCC2)c(C)c1
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?