Cc1ccc(C)c2nc(O)c(CN(CC3CCCO3)S(=O)(=O)c3ccc4c(c3)OCCO4)cc12
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?