CCCCN(C)CCCNC(=O)c1ccc2c(c1)NC(=O)C(N1CCOCC1)S2
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?