Cc1ccc(S(=O)(=O)NCC(=O)N(CC(=O)NC2CCCC2)c2ccc3c(c2)OCCO3)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?