CCN(C(=O)Cn1c(=O)oc2cc(S(=O)(=O)N3CCCC3)ccc21)c1cccc(C)c1
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?