CCN1CCN(c2ccc(S(=O)(=O)N3CCCCC3)cc2NC(=O)c2cccc(NC(C)=O)c2)CC1
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?