Cc1ccc(S(=O)(=O)N2CCCOC2CNC(=O)C(=O)NCc2ccc3c(c2)OCO3)cc1
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?